Frankfurt / Main (dpa / lhe) - During a police operation in Frankfurt, a police officer fired a shot from his service weapon. No one was injured, police said on Thursday. She gave no further details as to how and why the officer fired the shot. The exact circumstances were under investigation, it said. Several patrols moved out to the Preungesheim district on Wednesday evening because young people had been reported there with a weapon. During the control of the young people between the ages of 13 and 17, an airsoft gun was found and secured.