Boko Haram threatens Cameroon

A man purporting to be the leader of Nigerian militant sect Boko Haram has threatened to step up violence in neighbouring Cameroon unless it scraps its constitution and embraces Islam.

The video posted online this week shows a man who looks like the group's head, Abubakar Shekau, but it is filmed from a distance at different angles.

The group, which has killed thousands and kidnapped hundreds in its bid to carve out an Islamic state in northern Nigeria, had also targeted Cameroon over the past year.

At least 15 people were killed in an attack by suspected Boko Haram militants on a bus in northern Cameroon on New Year's Day.

The militants have issued dozens of videos since their uprising turned violent in 2009, sometimes claiming attacks or threatening more.

Reuters