Police are trying to establish a motive for the attack but say there are no indications it was terrorism.
ADVERTISEMENTA woman has stabbed and injured six people on a bus in the western German city of Siegen.
Police said the suspect, a 32-year-old female, is a German national and was arrested after the attack.
At least 40 people were travelling on the bus at the time of the attack. Local authorities said at least three of the victims sustained life-threatening injuries.
Police are trying to establish a motive for the attack but say there are no indications it was terrorism.
This incident comes a week after a deadly knife attack in Solingen that left three people dead and eight others seriously wounded.
The suspect is a 26-year-old Syrian national who was previously due for deportation after his asylum application was rejected.
Following that incident, German Chancellor Olaf Scholz's government introduced new restrictions on carrying knives in public places.
It also began deporting convicted criminals back to Afghanistan for the first time since the Taliban retook power in 2021 in a deal facilitated by Qatar.