USA: Firefighters put out a blaze at an office building in New Jersey — after waiting for 100,000 rounds of ammunition stored inside to explode.

Rioters looted and burned shops, vandalised vehicles and taunted riot police who tried to block access to parts of a predominantly black suburb of St Louis after a candlelight vigil for an unarmed man who was fatally shot by an officer turned ugly.

There was vandalism after thousands of people attended a vigil for an unarmed black US teenager who was shot and killed by a police officer.