A man and a woman whose bodies were found dead at the bottom of Langdon Cliffs in Dover on New Year's Day are believed to be twins.
Kent Police said they are not treating the deaths of the 59-year-olds from Elton in Cheshire as suspicious.
Officers are now trying to trace the pair's last movements.
In a statement, police said: "We know they were in London on 22 December and we can place them in Dover on Boxing Day, but we are keen to establish if they were staying locally.
"We have already contacted local hotels but are now asking owners of guest houses, bed and breakfasts and pubs to contact us if they had a man and woman in their late 50s from Cheshire staying over the Christmas and New Year period.’
"Officers would also like to hear from anyone who saw the pair, who were wearing dark-coloured wet weather clothing, at the top of the cliffs in the period between Boxing Day and New Year’s Day."
A man whose body was also discovered at the bottom of the cliffs on the same day has been formally identified as a 45-year-old from Manchester.
His death is not being treated as suspicious and his next of kin have been informed.
Police are satisfied the deaths are unconnected.
The bodies of two men and a woman have been found near cliffs in Dover. Video report from John Ryall.
Enquiries are ongoing to confirm the identities of the three people found at the bottom of Langdon Cliffs, Dover, on Sunday 1 January.
Kent Police was called to the location at 2.27pm and the body of a man was subsequently discovered at the bottom of the cliffs by the coastguard.
During the search the coastguard also discovered the bodies of a second man and a woman.
Although formal identifications are yet to take place, the first man is believed to be a man in his 40s from the Greater Manchester area. His next of kin has been informed. His death is not being treated as suspicious.
The second man and woman are believed to be a brother and sister, in their 60s from the Cheshire area. Officers do not believe the deaths of the second man and woman are connected to the death of the first man.
Their deaths are not being treated as suspicious at this time and enquiries are ongoing to identify next of kin and reports are being compiled for the coroner.
Officers are appealing to anyone who saw a man and woman in their 60s in dark-coloured wet weather clothing at the top of the cliffs in the period between Boxing Day and New Year’s Day.
The bodies of two men and a woman have been found near cliffs in Dover. Officers, alerted to concerns for the welfare of a man at Langdon Cliffs, found a body.
During the search, the coastguard also discovered the bodies of a second man and woman. Officers do not believe their deaths are linked to that of the first man.
Kent Police were called due to concerns for the welfare of a man at Langdon Cliffs, Dover. Officers attended and the body of a man was subsequently discovered at the bottom of the cliffs by the coastguard. During the search the coastguard also discovered the bodies of a second man and a woman. Officers do not believe their deaths are linked to that of the first man. Enquiries into the circumstances behind all three deaths are ongoing
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