In October 2015 O’Brien was in the RE Bar in Field End Road, Eastcote, Hillingdon, with several friends. It is alleged that O’Brien approached 21-year-old Josh Hanson from Kingsbury, who was with his girlfriend at the bar, removed an item from his coat pocket and plunged it into his neck. He was pronounced dead at the scene.
O'Brien is believed to be in Europe and has changed his appearance since Josh's murder, with long hair, a full beard and a tattoo of an owl holding a skull. He has been using the Italian aliases Enzo Melloncelli and Enzo Machado.
A reward of up to £50,000 is available for information leading to O’Brien’s arrest and prosecution.
Important: Do not approach persons featured on this site. In an emergency, call 999
Crime Type: Murder
Date of Incident: October 2015
Location of Incident: Eastcote, Hillingdon
Age Range: -
Height: 6ft 0ins
Hair Colour: Dark brown
Hair Length: Short
Ethnic Appearance: White
London accent, birthmark on face, tattoo on his back of an owl holding a skull.