( KTRS ) Authorities say an officer fatally shot a suspect in an armed robbery at a KFC in south St. Louis.

Police Lt. Col. Lawrence O’Toole says a citizen flagged down an officer in a marked car Sunday evening and reported the robbery at a Kentucky Fried Chicken restaurant.

O’Toole says the officer went to the KFC and confronted the 52-year-old suspect, who raised a handgun toward the officer. The suspect reportedly refused orders to drop the weapon and the officer fired two shots, killing the man.

The 42-year-old officer is a 13-year veteran. He was not injured. A crowd of about 40 people gathered at the shortly after, some chanted protests against the police.