London, May 25 (IANS): A suspected killer and one of Britains most wanted fugitives has been placed on a global most wanted list after more than two years on the run, a media report said on Friday.

Shane O'Brien, 30, is alleged to have killed 21-year-old Josh Hanson in an unprovoked knife attack in a bar in Hillingdon in west London in October 2015, reports the Guardian.

He has now been placed on Interpol's worldwide most wanted list and there is a 50,000 pounds ($66,760) reward for information leading to his arrest and prosecution.

O'Brien left the UK on a privately chartered flight from Biggin Hill airport shortly after the attack.

Since fleeing the UK, he is thought to have lived in the Netherlands and the United Arab Emirates before returning to Europe, authorities said.

It emerged that he was arrested in Prague in early 2017 on suspicion of criminal damage and assault before he was released on bail.

The police said he has been travelling "extensively" and there were reported sightings in Gibraltar (Spain), Nice (France) and Prague.

He is also on the National Crime Agency's most wanted list.