BERKELEY, Mo. (AP) — The mayor of Berkeley, Missouri, says the city will thoroughly investigate the fatal shooting of a black 18-year-old by a white police officer. But Mayor Theodore Hoskins says comparisons to the Michael Brown case in Ferguson are unfair.

Hoskins spoke at a news conference Wednesday, hours after the shooting Tuesday night at a convenience store in Berkeley.

Berkeley, which is 82 percent black, is in north St. Louis County, next to Ferguson, where a white police officer killed Michael Brown, an unarmed black 18-year-old, in August.

Hoskins says the situations are different. He noted that surveillance footage shows the Berkeley 18-year-old pointed a gun at the officer who shot him. Also, Ferguson has a largely white police force, but the majority of police officers in Berkeley are black.