Nine people have been killed and 21 injured in a shooting at a shopping centre in Munich, according to German media reports.

A man opened fire at a McDonald’s restaurant outside the Olympia shopping centre in Munich late on Friday afternoon, eyewitnesses have said.

There were adolescents among the dead. Children have also been shot, police have said. Some of those injured were in a life-threatening condition.

Initial media reports on Friday evening had put the death toll at six. Police initially confirmed three deaths.

Police believe that an 18-year-old German-Iranian resident of Munich who acted alone and killed himself not far from the scene after the shooting. The authorities initially thought there were three attackers.

Police have not yet announced a motive for the attack. The gunman had no criminal record.

The attack came just four days after a young Afghan asylum seeker attacked several people with a knife and an ax on a train near the German city of  Wurzburg.