The president of Niger says at least 10 people have been killed after violent protests over a French publication's cartoon depicting Islam's prophet.

President Mahamadou Issoufou said that five deaths were reported after demonstrations in the capital of Niamey on Saturday. The victims were inside churches and bars that were set ablaze, he said.

On Friday, at least five people were killed in the town of Zinder after prayer services there.

The violence erupted after the French satirical weekly Charlie Hebdo published a new cartoon depicting the Prophet Muhammad. The issue, published Wednesday, was the first following a Jan. 7 terrorist attack on its headquarters that left 12 dead.

Physical depictions of the prophet are considered blasphemous, and protests have erupted in a number of predominantly Muslim countries this week.