On 20 June 2015, Alen Rizvanović drove a sports utility vehicle at high speeds through the center of Graz, Austria, killing three people in a matter of minutes and injuring 43 others, one of them dying months later.

Alen Rizvanović, the driver, intentionally killed and injured pedestrians and cyclists by hitting them with a green SUV-type Daewoo Rexton, which he was driving at an estimated speed of up to 100 kilometres (62 mi) per hour.

He then crashed into a café's seating area in the Hauptplatz (main square), where an event related to the 2015 Austrian Grand Prix was being held.

[3][4] During his attack, Rizvanović jumped out of his car briefly, ran up to an elderly couple in front of a grocery shop, and stabbed them with a knife, wounding the man severely.

[10][11] As a result of the restraining order, police revoked Rizvanović's weapon's license and confiscated a semiautomatic firearm and ammunition belonging to him.

The day before, Austrian newspaper Die Presse reported that the Federal Office for the Protection of the Constitution and Counterterrorism is "interested in Rizvanović".

[12] Prior to the attack, he had more than 2,500 followers on Twitter, many of them from Arab countries and at least one a suspected neo-Nazi, but he deleted all of the tweets and messages on his online accounts, except for one, which indicated that the crime was premeditated and not the deed of a mentally ill person.