An employee of the RussianConsulate in New York was found dead there early Tuesday with a head wound, though police were still trying to determine his exact cause of death.
The man, who was in charge of security at the installation, was found unconscious before 7:00 am (1200 GMT) inside the consulate in the Upper East Side neighborhood near Central Park, a New York Police Department spokesman said.
He has not yet been identified, though his age was given as 63. A source close to the police investigation said the man was apparently in ill health.
Police have not yet spoken of a potential crime, and are awaiting the results of the medical examiner's autopsy to determine a cause of death.
A former aide to Russian President Vladimir Putin was found dead in a Washington hotel last year, prompting wild theories over the murky death, but prosecutors said last month his sudden death was an accident that occurred after days of heavy drinking and successive falls.