(Seychelles News Agency) - The Seychelles police have reported autopsy results indicate respiratory failure as the cause of death of Jeffrey Reynolds and Mark Kennedy, two US security officers found dead on the Maersk Alabama last week, indicate the cause as respiratory failure.

" autopsy reports (....) concluded they died of  respiratory failure, with suspicion of myocardial infarction (heart attack). Samples of urine, blood, stomach contents  etc, from the two men are being sent to  Mauritius  for forensic analysis to establish if they had consumed a substance which may have induced these events," said a police statement this evening.

The Seychelles police said that they suspect drug use by the two American men, as a preliminary investigation 'indicated by the presence of a syringe and traces of heroin which were found in the cabin.'

Arrangements are underway for the repatriation of Reynolds and Kennedy, said the statement.

The two former US Navy SEALS officers were found dead in their cabins on February 18.