Photo:  Nnamdi Kanu

By  Alexis Akwagyiram

(Reuters) - A secessionist leader seeking independence from Nigeria has been missing since an alleged military raid more than two weeks ago left his house in the city of Umuahia riddled with bullet holes, its windows smashed and doors hanging off hinges.

The disappearance of Nnamdi Kanu, after the raid the army says did not happen, threatens to ignite separatist unrest capable of destabilizing southeastern Nigeria, a region where a million people died in a 1967-70 civil war over the short-lived Republic of Biafra.