According to the police report, two police officers rang the doorbell of a two-storey house shortly after 8am. When the officers tried to enter the house by force, a man named as 35-year-old Roger F. opened fire from inside.
One officer was shot in the stomach and died immediately, despite attempts to revive him.
The other officer was shot in the arm and was able to radio a passing police patrol, who managed to arrest Roger F.
He is thought to be an unemployed man who suffered from alcohol-related problems. Neighbours told the 20 Minuten newspaper he was rarely seen outside.