A 54 year old man is being questioned by Devon and Cornwall Police in connection with the death of a Helston man. He was arrested in the Nottingham area on Tuesday night on suspicion of murder.
The body of 72 year old Colin Payne was found at flats in Sanctuary Lane on Sunday and forensic officers are continuing to examine the scene.
Detectives still want to hear from anyone who may have seen Mr Payne between 31 May and 17 June.
More top news
Police have launched a murder investigation following the suspicious death of a man in his 20s in Plymouth.
It's looking like it'll be a dry night, with sunny spells tomorrow. Here's Helen with your forecast.
Tonight will be dry with clear spells for most, although there may be some isolated fog patches as we head towards the early hours.