OFFICERS investigating the sudden death of a man in Hampshire will have to wait for the results of blood tests to discover how he died.

A post mortem carried out yesterday to determine the cause of death proved inconclusive.

Detectives have bailed three men who were arrested following the discovery of the man's body at a flat in Highlands Road, Portsmouth on Saturday.

Emergency services were called to the address after reports that a man in his 30s had suffered from a suspected heart attack.

Police and paramedics were called to the scene shortly after 7.30pm, and a cordon was set up surrounding the flat.

Police are now appealing for anyone who was in Highland Road or Festing Road between 4pm and 8pm yesterday to contact Fratton police station on 0845 045 4545 quoting Operation Parkhouse.