A Partizan Belgrade hooligan leader has been shot dead as hundreds of the Serbian side's fans descend on Manchester for the Europa League clash.
Ljubomir Markovic, 37, was killed in the Serbian capital Belgrade as he was standing in the street, with the incident captured on CCTV cameras.
In the footage released, Markovic - who was allegedly the leader of the 'Alcatraz' gang of Partizan hooligans - and a group of his friends can be seen standing in front of a small local football stadium when a hooded man walks up to them.
The thug pulls out a pistol and opens fire on Markovic who sprints away. The gunman runs after him and the Partizan hooligan can be seen dropping to the ground.
Local media report six shots were fired, with the final bullet hitting Markovic's head and killing him. Reports also state the killer fled the scene in a black BMW X5 with licence plates from the western Siberian city of Sabac.
A police investigation was launched and reports state Markovic himself was armed at the time of the attack but did not have time to use the weapon.
Markovic leaves behind his wife and two-year-old daughter. Police are working to find a motive for the crime and the investigation is ongoing.