Police name killed submarine sailor
9 April 2011 Last updated at 16:46 BST
A Royal Navy crewman shot dead on board a nuclear submarine has been officially named by the Ministry of Defence as Lieutenant Commander Ian Molyneux.
A second sailor was also shot and is in a stable condition in hospital. A Royal Navy sailor is being questioned on suspicion of murder.
Chief Superintendent David Thomas told a news conference that officers have been granted more time to question the suspect.