Violent protests broke out again in suburban St. Louis after another fatal shooting of a black 18-year-old by a white police officer.

The shooting happened around 11:15 p.m. Tuesday at a convenience store in Berkeley, Missouri, just a few miles from Ferguson, where Michael Brown, an unarmed black 18-year-old, was killed by a white officer in August.

St. Louis County Police Chief Jon Belmar says the Berkeley shooting victim was black and the officer white.

Police shooting Toni Martin

Toni Martin, front centre, cries out as she talks to police at the scene where she says her son, Antonio Martin, was fatally shot Tuesday by a police officer at a gas station in Berkeley, Mo. (David Carson, St. Louis Post-Dispatch/Associated Press)

Belmar says police were called about a theft and as the officer questioned two men, one pointed a gun at him. The officer fired three shots. One hit the gunman.

A violent protest broke out. Two officers were injured, police cars were damaged and fire was set at a QuikTrip store. Four people were arrested.