Counter-terror police in London investigating 'unexplained' death of man said to be Russian exile

British media reported he was believed to be a Russian exile.

Counter-terrorism police are investigating an “unexplained” death of a man in his 60s found dead at a residential address in the London area, London police said Tuesday.

The counter-terrorism police were leading the probe "as a precaution because of associations that the man is believed to have had," the Metropolitan Police said. Police responded Monday night after reports that his body was found in the Kingston area of London, authorities said.

The Metropolitan Police said there was no evidence that suggested a link to last week's poisoning of former Russian spy Sergei Skripal and his daughter Yulia in Salisbury, England. The U.K. has said it was "highly likely" Russia was behind the poisoning, which left the pair in critical condition.

Police in London said they believed they knew the identity of the deceased man but that the body had not yet been formally identified.