borno, kono, yobe. the fighters that fired through police stations and churches and engaged in fierce battles with security forces. authorities say they've represented at least 100 members of boko haram. a group calling for islamic law >> one thing that is very clear about this group is that it preaches for people to abandon western violence, to stop going to schools to learn the english language. and anything that has to do with the european and the western europe and the americas. they're also saying people should stop working for the nigerian system because it's it's up to the individuals. >> reporter: nigeria is split almost equally between the muslim north and the christian south. and since 2000, 12 of the country's 36 states introduced sharia islamic law. violence last broke out in november in the city of jos. when a dispute over loca, confrontation when turned into religion confrontation. killing more than 700. s but analysts say the unrest is more than about root of extensions. >> i think it spe