Police believe two people who died in a house fire in Oxfordshire had been squatting at the property.
Two people were found dead inside Red Cottage after the fire
The bodies of Howard Blake, 51, and Sian Cainwein, 36, were found after a blaze at Red Cottage, in Old Abingdon Road, Oxford.
Post-mortem examinations revealed they had died from smoke inhalation during the fire in the early hours of Tuesday.
A 60-year-old man held on suspicion of murder following the blaze has been released on police bail.
Old Abingdon Road was closed again on Thursday while police examined the scene and conducted house-to-house inquiries.
Police have said the fire may have been smouldering for some time before emergency services were alerted - investigators believe the fire started between 0230 GMT and 0300 GMT.
Det Ch Insp Rob Mason said: "I am keen to hear from anyone who saw smoke coming from the house to help us narrow down when the fire started.
"The fire created a lot of smoke and could have been seen or smelled by passing motorists or people walking nearby."