TWO men found dead at Sydney’s Central Railway Station may have been killed from an overdose of prescription drugs.

Emergency crews were called to the station on Friday at 2pm where they found an unresponsive man in a toilet cubicle on a train.

Despite attempts to revive the 40-year-old, he died at the scene.

The body of another man, also 40, was found an hour later in the male toilets on the station’s country concourse.

A prescription drug is believed to have been on one of the men, according to police at the scene.

It is understood the two men knew each other and arrived on a Sydney-bound train together after boarding at Woy Woy earlier that day.

Police are reviewing CCTV footage from the stations to determine what happened in the lead up to their deaths.

They are also waiting on toxicology reports to confirm the cause of death however early investigations suggest the deaths were not suspicious.

Post mortems will be conducted to determine how they died.