The police discovered two bodies in a house on Tuesday evening during a major operation in Fischerhude in the Lower Saxony district of Verden.
It is a man and a woman, as a police spokeswoman said.
Nothing has yet been communicated about the cause of death.
Previously, a woman was injured and taken to hospital.
A firearm is said to have been used.
The police have secured the house, but are also present in the area.
According to the information, it was unclear whether one of the dead was possibly a perpetrator.