A young man is said to have stabbed two teenagers several times with a knife during an altercation in Cologne. A 15-year-old suffered life-threatening injuries on Saturday night and underwent emergency surgery, police and prosecutors said. His 16-year-old companion was also taken to hospital.

The alleged perpetrator is said to have hit the two teenagers several times in the upper body. According to police, a 17-year-old was able to leave the clinic after being punched in the face.

The police are now looking for the still unknown suspected stabber. A homicide squad is currently evaluating photos. "According to initial findings, the attackers are said to have been four," it said. The background was still unclear in the afternoon.

The altercation is said to have occurred in front of a bar near Palmstraße shortly after midnight. The police are looking for witnesses.