Here’s the Gun Antonio Martin Allegedly Pointed at St. Louis Police Officer (Photo)

Police stand guard Wednesday, Dec. 24, 2014, following a shooting Tuesday at a gas station in Berkeley, Mo. St. Louis County police say a man who pulled a gun and pointed it at an officer has been killed. (AP Photo/St. Louis Post-Dispatch, David Carson)

St. Louis County Police on Wednesday released photos of the crime scene as well as a photo of the gun Antonio Martin allegedly pointed at a police officer.

STL police release photo of gun Antonio Martin pointed at cop before being shot dead pic.twitter.com/6g59nRS9UH

— PzFeed Top News (@PzFeed) December 24, 2014

A police officer shot and killed Martin, 18, on Tuesday night at a gas station in Berekely, Missouri, sparking violent protests.

A video released by police shows the involved officer running during the incident. He appears to backpedal before tripping and running off.