The Islamic State group claimed responsibility for an attack in Vienna that killed at least four people, without providing evidence, in a statement from the group’s Amaq News Agency posted on Telegram.

The group’s statement was accompanied by a picture of a bearded man, named “Abu Dagnah Al-Albany”, saying he attacked crowds in central Vienna on Monday with a gun and a machine gun, before he was killed himself by Austrian police.

The gunman had been released from jail less than a year ago.

An elderly man and woman, a young passer-by and a waitress were killed, and 22 people including a policeman were wounded, Interior Minister Karl Nehammer told a news conference. Vienna’s mayor said three people were still in critical condition.