Federal Interior Minister Nancy Faeser (SPD) expressed her sympathy after the knife attack on a regional train from Kiel to Hamburg.
"All our thoughts are with the victims of this terrible act and their families," the politician wrote on Twitter on Wednesday.
This is "devastating news".
Brokstedt/Kiel – According to current knowledge, two people were killed and seven injured, three of them seriously.
The suspect is among the injured.
The background to the crime was initially unclear.
dpa