Several people are believed to have been killed, after reports of a shooting at a shopping centre, in the German city of Munich.
Several people are reported to have been killed, the Sueddeutsche Zeitung newspaper quotes police as saying.
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.
Reports suggest a single attacker was involved, with a police operation currently underway.
Islamic State has previously called for ‘lone wolf’ attacks on countries involving in a coalition bombing the group’s territory in Iraq and Syria. Germany is involved in that coalition.