At least one person has been killed and several wounded in central Vienna amid exchanges of fire, the Austrian capital’s police department said.
Police said on Twitter that the exact circumstances of Monday evening’s incident were still being determined, urging residents to keep away from all public places or public transport.
The shooting began at about 8pm (19:00 GMT) when several suspects armed with rifles began opening fire in Seitenstettengasse, police said. Shots were fired in “six different locations”, it added. Among those wounded was a police officer.
One attacker was shot and killed by police officers.
A large area of central Vienna was cordoned off and police said a significant deployment was under way.
Austria’s interior minister, Karl Nehammer, called the incident “an apparent terror attack”.
Kronen Zeitung newspaper reported a large police operation in Schwedenplatz.
Local media reported that the attack happened near Vienna’s main synagogue, but police have not confirmed if it was the target.
Jewish community leader Oskar Deutsch said on Twitter it was not clear whether the synagogue and adjoining offices had been the target, adding that they were closed at the time.