POLICE are "exploring powers" to stop four people from entering Worthing after they were released on bail following a suspected attack.

They were arrested after a man was left in a life-threatening condition following a suspected assault on Sunday night.

Officers were called to Whitebeam Road, Worthing, shortly before 7.30pm after the man was found injured in the street.

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It is believed he was assaulted in nearby Longcroft Park.

Sussex Police carried out "fast-time enquiries" and four suspects were arrested.

Now, The Argus can reveal they have been released on bail under "strict" conditions including curfews.

A Sussex Police spokesman said: "Those arrested have been released on bail with strict conditions while police continue their enquiries.

"These conditions include curfews, staying at a given address and not associating with each other.

"Police are also exploring other powers available to stop them entering the Worthing area."

Pictures taken from the scene show officers searching the area, using torches to illuminate the pitch black park.

In a statement released yesterday, the force appealed for witnesses to the serious assault.

The spokesman said: "Officers are treating this as an isolated incident and residents can expect to see an increased police presence in the area while the investigation continues.

"Anyone who saw what happened, or who was in the park around that time and may have any relevant information, is asked to get in touch either online or by calling 101 quoting Operation Swallowtail.

"Alternatively, information can be passed anonymously to police via the independent charity Crimestoppers on 0800 555 111."