A gunman shot and killed a man and a woman on Thursday in the northwestern German town of Espelkamp, local police said.
There is no immediate information as to the motive, but police believed that it was not a terror attack.
A murder investigation has been opened as officers from across the region continue to look for the suspected attacker.
Espelkamp is a town in the Minden-Lübbecke district, in North Rhine-Westphalia.