At about 6am on Tuesday (June 25), police were alerted by South East Coast Ambulance Service to a man found unconscious in Ninfield Road, Bexhill.
The man, believed to be in his 20s, was taken to hospital, where he remains at this time.
Police said an 18-year-old local man has been arrested on suspicion of wounding with intent, and is currently in custody.
A police spokesman said officers are not seeking anyone else in relation to this matter.
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