Vienna: Islamic State, on November 3, claimed responsibility for the deadly attack in Vienna, in a statement issued through its Amaq News Agency. According to reports, IS even issued a picture and a video purporting to show the gunman. The picture showed a bearded man identified as Abu Dagnah Al-Albany.

The picture, released on Telegram, showed a bearded man identified as “Abu Dagnah Al-Albany”, along with a statement saying he had attacked crowds in central Vienna on Monday with a pistol and machine gun before being shot dead by police.

He is seen carrying a pistol, a machine gun and a machete and is wearing a ring stamped with a sentence saying “Mohammed is the messenger of Allah”. Notably, he had been released from jail less than a year ago.

The man who opened fire in central Vienna on Monday while armed has been identified as a 20-year-old Austrian citizen who had sought to travel to Syria to join the Islamic State, Austria's Interior Minister Karl Nehammer said. The shooter was known to be armed with an automatic rifle, a pistol, and a machete and was wearing a fake explosive device.

Four were killed while 22 people were injured in the terrorist attack that shook the Austrian capital on Monday.

Meanwhile, the Austrian officials have identified the attacker as Kujtim Fejzulai, a dual citizen of Austria and North Macedonia, who had been sentenced to 22 months in jail in April 2019 for attempting to travel to Syria to join the IS. Fejzulai is described as a 20-year-old IS sympathiser and on Monday he killed four people.

"The evidence gathered so far showed no indication that others were involved. The attacker, an Austrian who also has citizenship from North Macedonia, was identified as Kujtim Fejzulai by officials and his former lawyer, Nikolaus Rast," Nehammer was quoted as saying by the New York Times.

"The suspect had been arrested once before after trying to travel to Syria to join the Islamic State. The man was sentenced to 22 months in prison for that attempt but was released early, raising questions about how someone on the radar of the authorities had managed to carry out such an attack," Nehammer added.