Initial examinations have not discovered the cause of the deaths of a man and a woman found at a Romford hotel.
Post-mortems were held on July 7 where no formal cause of death was established and further tests will be carried out, police said.
Police were called at 12.43pm on July 1 after two people were found unresponsive at a hotel in Mercury Gardens, Romford.
A man, 28, and a woman, 54, were pronounced dead at the scene and their next of kin were informed.
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Officers attended with the London Ambulance Service and the London Fire Brigade.
The deaths are being treated as unexpected and enquiries are taking place to establish the circumstances.
A spokesperson for Premier Inn previously said its Mercury Gardens hotel was assisting police with ther investigation.
“Our thoughts are with the friends and family of these guests at this terribly sad time,” the spokesperson added.
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