A 50 year old man and 29 year old woman remain in Police custody on Wednesday morning.
The pair were arrested on suspicion of murder, following the discovery of the body of a 33 year old man in a property in Molesworth Road in Plymouth in the early hours of Tuesday morning.
Devon and Cornwall Police said a forensic post mortem is due to be carried out to identify the actual cause of death.
More top news
Bob Crampton has the latest weather forecast.
Carclaze Community Primary School is ditching many chairs and desks for hay bales and beanbags, and letting children write on the floor.
No more cuts to Devon and Cornwall Police and more money for West Country schools: two promises made by the Chancellor today.