CLAYTON, Mo. (AP) — A man who fatally shot five people during a rampage at a city council meeting in suburban St. Louis intended to kill as many city officials as he could, a prosecutor said Friday in releasing the conclusions of the investigation.

St. Louis County Prosecutor Robert McCulloch said evidence gathered after the Feb. 7 shooting indicated Charles "Cookie" Thornton would have killed more people during the Kirkwood City Council meeting had he not been shot and killed himself.

Thornton's rampage lasted less than a minute before he was shot, McCulloch said. Thornton, 52, killed a police officer outside City Hall before fatally shooting another officer, two council members and the city's public works director inside the building. A reporter and then-Mayor Mike Swoboda were injured.