A man has been stabbed to death in a shop in Elberfeld, Dusseldorf, according to reports, after a knife attack in Finland. At least one other person is believed to have been hurt.
The incident has taken place on Kipdorf in Wuppertal-Elberfeld, in the city in North Rhine-Westphalia.
Special forces have been deployed and police have descended on the scene, forming a ring of steel around the area.
A special forces commander said systematic searches were taking place in neighbouring buildings.
Local media have reported the killer – or killers – have not yet been caught.
The dead man is believed to be 31-years-old and the other injured person, 25.
Early reports say the incident took place at a haridressers.
All of Europe is on standby for terror attacks following recent threats by Islamic State (ISIS) jihadis.
Fourteen were killed in dual attacks in Barcelona and Cambrils on Thursday.