Five people were wounded, one of them seriously, during the night when a hand grenade was lobbed at the Cafe Nemoland in the Christiania district of Copenhagen.
A 22-year-old man suffered serious facial injuries, while four others suffered shrapnel wounds to the back and lower extremities. The 22-year-old was operated on during the night and is said to be in a stable condition.
Police have no clues as to who was responsible for the attack or, as yet, an indication of a motive. Eyewitnesses to the explosion had disappeared from the area by the time police officers arrived at the scene.