Protesters are seen behind a fire barricade as they chant anti-government slogans before clashing with riot police in Burundi's capital Bujumbura, April 28, 2015.
Protesters are seen behind a fire barricade as they chant anti-government slogans before clashing with riot police in Burundi's capital Bujumbura, April 28, 2015.Reuters File

Grenade attacks in Burundi's capital Bujumbura and towns to the north killed four people on Sunday night, the police said on Monday, stoking tensions before a parliamentary election next week and a presidential vote on 15 July.

A grenade attack on a bar in Ngozi town north of Bujumbura killed four people and wounded 27, while a blast in the northern town of Kirundo near a bank injured two people, police spokesman Pierre Nkurikiye said. A grenade attack in the Musaga district of Bujumbura also wounded one police officer, he said.

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