FOUR men have been released on police bail following their arrest on suspicion of attempted murder after a man was violently assaulted in Hartlepool.

The men, three in their 30s and one in his 40s, were arrested on Sunday morning when a 33-year-old suffered serious head injuries following the incident which happened in the town’s Tankerville Street.

The victim remains in a serious condition in at Middlesbrough's James Cook University Hospital.

Cleveland Police are appealing for anyone with information to come forward after emergency crews were called to the scene at around 9.15am.

Anyone with information is asked to call police on the non-emergency number 101.