A MAN in his 30s has been arrested in connection with an assault at Festival Leisure Park in Basildon.

The attack outside the Unit 7 night club left a good samaritan unconscious in the early hours of Sunday morning.

The man in his 20s sustained a serious head injuiry.

A 30 year-old man from Laindon was arrested yesterday, on suspicion of GBH with intent.

He has been released on bail until June 24.

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A spokesman from Essex Police, said: "We were called to reports of a man injured outside Unit 7 at around 2.30am on Sunday 30 May.

"It was reported the man, who is in his 20s, had been assaulted and had sustained a serious head injury.

"Anyone who has any information about the incident is asked to contact us on 101 quoting the crime reference number 42/101344/21.

"You can submit a report online at https://www.essex.police.uk or use the 'Live Chat' button to speak to an online operator between 7am-11pm.

"Alternatively, information can be given anonymously to Crimestoppers on 0800 555 111."