The Sharia legal system was first introduced in the Fourth Republic in

The Sharia legal system was first introduced in the Fourth Republic in Zamfara State. In 1999, the state government, led by Governor Ahmad Sani Yerima, introduced Sharia law, making it the first Nigerian state to do so. The decision was controversial and sparked debates about the role of religion in government and the compatibility of Islamic law with Nigeria's secular constitution. However, since the introduction of Sharia law in Zamfara State, several other northern states in Nigeria have followed suit and implemented the system to varying degrees. While Sharia law coexists alongside the secular legal system in these states, it is applied to certain aspects of personal and criminal law, such as marriage, divorce, and theft.