Atlanta Police issued an officer safety advisory Thursday after allegedly receiving multiple threats from local gang members.

Officer Jarius Daugherty said Atlanta Police officers have received multiple death threats after the death of 18-year-old D’ettrick Griffin, who was shot and killed by a plainclothes Atlanta officer when he attempted to steal his car at a gas station earlier this week. Death threats have been made against Atlanta police officers as a result of the fatal shooting Tuesday night of a known gang member by one of our officers,” said Daugherty. 

The Georgia Bureau of Investigation is investigating the shooting, NBC News reports.