A gunman killed two people and wounded 11 before turning the weapon on himself at a concert in Vienna.
The shooting happened in the Austrian capital at around 3am local time.
A 27-year-old man was behind the incident which was sparked by a "relationship dispute", according to local reports.
An argument between a man and a woman escalated and the perpetrator went to his car and pulled out a weapon, police said.He then fired "at random" into the crowd before turning the gun on himself in a car park.
Police said some people at the gig, organized by a motorcycle club called 'The Lords', fled into nearby woods to escape the carnage.
The woman was left unharmed.
There were around 150 people at the concert in Nenzing, a town close to the Swiss border.