According to police, a man shot at least four people in and around the US metropolis of Denver. The suspect was then shot in an exchange of fire with the police in Lakewood near Denver, it said. There, an eyewitness filmed armed police raiding a residential area shortly after the suspect was killed. The police initially assumed that the man had fired shots in various locations in Denver and Lakewood. Several people are said to have been injured, including a police officer. Initially, nothing was known about the identity of the alleged perpetrator and his possible motives. According to their own statements, the police assume that the perpetrator was a lone perpetrator.