The threat against Issa Tchiroma Bakary comes a day after he was declared the runner-up in disputed presidential polls.
Entries by BBC News
Sainey Mboge was labelled a "bad influence" as a child, just for playing football. But now the Gambian is having the last laugh, having built a career in the game.
Ten Europeans and a local pilot have died after the plane crashed while flying to a game park.
The UN says there are credible reports of "summary executions" in el-Fasher.
Cameroon's Paul Biya has extended his 43-year rule by winning a heavily disputed election.
Cameroon's Paul Biya has extended his 43-year rule by wining a heavily disputed election.
Cameroon's Paul Biya has extended his 43-year rule by winning a heavily disputed election.
Entrepreneur Talifhani Banks has bought a modern delivery system to smaller firms in South Africa.
Alassane Ouattara's win is unsurprising as his biggest rivals were barred from contesting the election.
Paul Biya retains his title as the world's oldest head of state, in an election marred with violence and allegations of fraud.