Nigeria has an estimated population of more than 130 million and more than 250 ethnic groups. Up to date statistics are not available, but it is estimated that around half the population are Muslims, while just under half are Christians. A smaller minority observe traditional religions. The northern part of the country is predominantly Muslim, with the Hausa and Fulani the majority ethnic groups; the south is predominantly Christian. However, the constant movement of populations, particularly in the context of trade, has meant that both Muslim and Christian communities are found in most parts of the country, with sizeable Christian minorities in some northern states and sizeable Muslim minorities in the south. Muslims and Christians are distributed more evenly in the central parts of Nigeria known as the Middle Belt, as well as in parts of the southwest, where the dominant ethnic group, the Yoruba, is made up of both Muslims and Christians.
Nigeria is a federation of thirty-six states. Each state has its own government and its own state house of assembly. State governors are granted considerable autonomy in many respects and, in practice, the federal government rarely intervenes to challenge their decisions or policies. About half of Nigerias states are considered to be part of what is commonly referred to as the north, although there is no recognized boundary between north and south, and the regional and cultural identity of some states is the subject of much dispute.
Partly as a result of its greater ethnic and religious homogeneity, the northern part of Nigeria has been treated as a distinct entity since the early part of the twentieth century, including during the British colonial era when it was known as the Northern Region. From 1914, when the state of Nigeria was first created until the 1950s, Nigeria was administered as two separate halves. Even the legislation applied in the north was different; up until today, a separate Penal Code of Northern Nigeria8 remains in force, while the rest of the country has its own Criminal Code.9 Politics became regionalized early on in Nigerias history, with the emergence of three main blocs: the north, the south-west, and the south-east.10 There have been longstanding political tensions and rivalries between the predominantly Hausa population of the north, and a multitude of other ethnic groups in the south and other parts of the country, partly as a result of the domination of northerners in military and political positions during the long periods of military rule. Most of the constitutional changes which led to the full federalization of the country were brought in during the 1950s, leading up to the countrys independence in 1960. However, even since the end of military rule in 1999, many southerners still resent what they perceive as the continued domination of northerners in the political and military elite. This historical competition between north and south, aggravated by the religious dimension which has been brought to the fore in more recent years, is central to many of the tensions still prevailing in Nigeria. In this context, Sharia has increasingly assumed a symbolic importance in terms of regional as well as religious interests.
Sharia is a system of Islamic law based on four main sources: the Quran (Gods revelation to the Prophet Muhammed); the Sunna, or actions of the Prophet, described in the Hadith; the Qiyas or process of analogical reasoning based on understanding of the principles of the Quran or the Hadith; and the Ijma, or consensus of opinion among Islamic scholars.
Sharia has been applied in many different countries with large Muslim populations to both criminal and civil law. For many Muslims, it is also a philosophy and entire set of rules and guidelines which extends well beyond the Western concept of law and governs day to day conduct in terms of social relations, private life, and ethical codes. There are certain guiding principles within Sharia upon which most Muslims agree, but, as with all religions, there are differences in interpretation. In particular, there have been significant differences in interpretation of the Quran and the Hadith, and therefore different understandings of aspects of Sharia among religious leaders, scholars, and others. The majority of Muslims in Nigeria are Sunni. Within Sunni Islam, the four main schools of thought―Maliki, Hanafi, Hanbali and Shafi―have each developed slightly different beliefs and observe different traditions; they have also formulated different prescriptions. The form of Sharia applied in Nigeria is based in most part on the Maliki school of thought, which is dominant among Muslims in west and north Africa.11
In terms of criminal law, there are three main categories of offenses and punishments under Sharia. The first are the hudud (or hadd, in the singular) punishments laid out in the Quran and the Hadith; because they are specified by God, they are regarded as fixed and cannot be changed. They include theft (punishable by amputation), armed robbery (punishable by death or amputation), extra-marital sex (punishable by death or flogging), false accusation of extra-marital sex (punishable by flogging), consumption of alcohol (punishable by flogging), and apostasy or renunciation of Islam (punishable by death). However, even these offenses, despite their fixed nature, have been interpreted differently by different schools of thought, and in different countries. For example in Nigeria, apostasy is not included as an offense in the Sharia penal codes, presumably in recognition of the diversity of faiths in the country, even in the north, and the right to freedom of religion.
The second category are qisas and diya punishments. Qisas, applicable for murder or injury, is based on the notion of retaliation: it involves inflicting the same punishment on the defendant as she or he inflicted on the victim, in some cases using the same methods (for example, a murderer should be killed with the same type of weapon as she or he used to commit the murder). Diya, or the payment of blood money, requires financial or material compensation for the crime in cases where the family of the victim does not demand qisas. The third category are tazir punishments, where judges can exercise discretion and choose from a range of punishments, as the state is not bound by the wishes of the victims relatives.
In terms of criminal law, according to Sharia, the accused should always be given the benefit of the doubt. Considerable latitude is provided to Sharia court judges who are expected to exercise great caution before sentencing, even in the case of hudud, where fixed punishments are specified. For certain crimes, the standard of evidence required for conviction is deliberately set so high as to be almost unattainable, meaning that the law is intended more as a deterrent than a real prospect of punishment.
Even if the accused confesses to the crime, Sharia allows them several opportunities to withdraw the confession. The confession should be made willingly and the accused should fully understand the implications of confessing. Judges should always look for mitigating circumstances―for example the poverty of the accused, in cases of theft―and the mental sanity of the defendant should always be taken into account when determining the sentence. The Zamfara State governor (one of the keenest advocates of Sharia in Nigeria) told Human Rights Watch: If someones basic needs are met but he still goes to steal, the requirement for amputation has been met. But if the person is needy, they cant even be punished under Sharia. Or they will be given a light sentence, for example one or two months.12 The Kebbi State Attorney General also claimed that Sharia court judges were taught to ask the defendants, first, whether they committed the offense, and secondly, why, and that if they said they had stolen because they were hungry, they should not be convicted.13 In addition, to be convicted of theft, a person must have removed an object which is not his/her own from its usual place of custody; if the object is in a different place or has been left out negligently, the person should not be convicted.
The accused should also be given several chances, including the chance to escape punishment completely. A Muslim human rights activist explained to Human Rights Watch: Under Sharia, if a convicted person runs away from the authorities, the case is over. They cant pursue him. The emphasis is on repentance.14 Judges should also satisfy themselves that the accused fully understand and appreciate their offense and the consequences in terms of sentences they may occur. However, in practice, Sharia courts have failed to observe all these requirements.15
Islam has been practiced in Nigeria since around the eleventh century, and Sharia has been applied in the northern part of the country before, during and since the colonial period.16 It has been in force at least since the Islamic jihad led by Shehu Uthman Dan Fodio and the establishment of the Sokoto Caliphate in 1804. However, some scholars have argued that it was established even earlier in Kanem Borno (in present day northeastern Nigeria and southern Chad).17
When northern Nigeria was colonized by the British in the late nineteenth century, colonial laws continued to recognize Sharia, but certain aspects of it were modified or restricted. Sharia courts―then known as area courts―had jurisdiction only over matters of personal status law, such as divorce, inheritance, and domestic disputes. Criminal matters were dealt with under the Penal Code for Northern Nigeria; although strongly influenced by the British legal system, the Penal Code included many components of Sharia. However, the British colonial administration excluded the harsher penalties such as death by stoning and amputations on the basis that they were repugnant to natural justice, equity and good conscience; floggings continued to be carried out.
Many northerners interviewed by Human Rights Watch in the course of our research stressed that Sharia was not new in Nigeria. They explained that what was new, or what was being revived, was its extension to criminal law, and downplayed the overall significance of the new legislation brought in since 2000. However, the extension to criminal law has had wide-ranging consequences and has opened up complex political and religious debates. It has also raised fundamental human rights issues, particularly with regard to the introduction of hudud punishments, which include death by stoning for adultery, amputation for theft, and flogging for consumption of alcohol.
 This section provides just a brief summary of the background issues relevant to the application of Sharia in Nigeria today. Human Rights Watch does not seek to duplicate the work of numerous Nigerian academics, lawyers, activists and others who have written extensively and knowledgeably about the history of Islam and Sharia in Nigeria and the debates surrounding the place of Sharia in Nigeria. Some of these works are referred to in footnotes in this report.
 The Penal Code (Northern States) Federal Provisions Act of 1959 is commonly referred to as the Penal Code or Penal Code of Northern Nigeria.
 Criminal Code Act, 1961.
 These regions are home to the three largest ethnic groups: the Hausa in the north, the Yoruba in the southwest, and the Igbo - and a number of other ethnic groups in the southeast. Many Nigerian academics and writers have highlighted the role of colonial regional policy in the emergency of ethnic and regional politics in Nigeria.
 The Maliki and Hanafi schools are generally more flexible than the Hanbali and Shafi schools of thought in that they allow for a wider range of sources of legislation, including istihsan (preference), istishab (acquaintance), urf (useful public practice) and maslaha (public good). This range of sources has allowed laws to evolve and has been used by those campaigning for legal reform. See Albaqir Al-Afif Mukhtar, Human Rights and Islamic Law: the development of the rights of slaves, women and aliens in two cultures, unpublished PhD thesis, 1996, University of Manchester.
 Human Rights Watch interview with Zamfara State Governor Ahmed Sani, Gusau, August 4, 2003.
 Human Rights Watch interview with Ibrahim Maiafu, Kebbi State Attorney General, Birnin Kebbi, December 18, 2003.
 Human Rights Watch interview, Abuja, July 21, 2003. This is a reference to an incident which occurred during the Prophets time, when a man sentenced to death by stoning escaped after he had received the first stones. When people ran after him to try to catch him, the Prophet said they should not do so (see Ibn Abi Hadid, Sharh al-Balagha, p.1311). However, the principle underlying this incident that a convicted person can be allowed to escape has not been institutionalized in law.
 Many Muslims in Nigeria and other countries have written about the principles of compassion, fairness, and justice inherent in Sharia. For a succinct explanation of these principles and the failure of Nigerian state governments to live up to them, see Punishments under Sharia and their significance, by Maryam Iman, published in Newswatch (Lagos), November 3, 2002.
 Many Nigerian and non-Nigerian writers have published accounts of the historical evolution of Sharia in northern Nigeria. See for example An opportunity missed by Nigerias Christians, by Philip Ostien, Faculty of Law, University of Jos, presented at a conference on The Sharia debate and the shaping of Muslim and Christian identities in Northern Nigeria, University of Bayreuth, July 11-12, 2003.
 See A.A Gwandu, Sharia in Northern Nigeria: the Experiences of Borno and Sokoto Caliphates, in A.M.Yakubu, A.M.Kani and I.Junaid (eds.) Understanding Sharia in Nigeria (Spectrum Books, Ibadan.)