Detectives launched a murder investigation today after a man in his 20s died in suspicious circumstances near Great Yarmouth seafront.

The man died at the former Yarmouth Labour club in Euston Road after he suffered serious injuries this morning.

Emergency services were called to the four storey building just after 7am but the man, who has not been named, died at the scene.

Police arrested a man, also in his 20s, on the suspicion of murder and is in custody.

He is questioned this afternoon by detectives from the Norfolk and Suffolk Major Investigation Team.

Detectives say the man was known to the dead man.

The former Labour club building, which is made up of flats, was sealed off as crime scene investigation officers collected evidence.

Detectives from the joint investigation team and Yarmouth CID spent the day talking to the residents of the building.

Leading the investigation Det Chief Inspector Jes Fry said: "We are still in the early stages of the investigation but it has been established that the man in custody was known to the victim and it is believed there was no wider threat to the community.

'The man detained is currently being questioned and this is likely to continue for the rest of the day."

A fire engine from Yarmouth was also called in to help police with their enquiries.

The building the dead man was found at used to be the St Cloud Hotel and was the Yarmouth Labour club until September 2007.

Norfolk Constabulary spokeswoman Beth Durham said: 'Detectives from the joint Norfolk and Suffolk Major Investigation Team continue to investigate the suspicious death of a man in Yarmouth.

'Emergency services were called to Euston Road at approximately 7am this morning to find a man with serious injuries. The victim, in his 20s, sadly died at the scene.

A second man, also in his 20s, was arrested close by a short while later on suspicion of murder. He remains in police custody at this time.

'Detectives, working with officers from Yarmouth CID, are interviewing other occupants in the house as witnesses to the incident.

'Crime Scene Investigation officers also continue to carry out a forensic examination of the scene.'