The best friends from Couva were first thought to have died in a vehicular accident in upper Tacarigua on Sunday.
Forensic pathologist Dr Valery Alexandrov who conducted the autopsies at the Forensic Science Centre, St James, believed the two victims were shot with two separate weapons.
They were found in an over turned vehicle on St Michael Road, Tacarigua, at about 12.30 pm on Sunday. Rampersad, 36, and Adams, 38, were both from Milton Road, Couva.
No motive has been given for the shooting