Breaking: Mutiple people injured, killed in Munich shopping centre

At least one person has been killed and an unknown number injured in a shooting at a shopping centre in the German city of Munich.

A big security operation is under way, German police say. The scene in the Moosach district has been sealed off.

Reports speak of one attacker. Helicopters are over the scene and shopworkers reportedly unable to leave.

The security forces have been on alert after a migrant stabbed five people on a train in Bavaria on Monday.

The authorities had warned of the danger of further attacks.

Munich police are telling people to avoid the area.