Deon Cornelius, 29, on Thursday lost his an appeal to have his death penalty sentence overturned after he was convicted in January.
Patricia Gerber, head of Locked Up, an organisation that assists South Africans arrested overseas for drug smuggling, said she was uncertain whether there were any other avenues that Deon Cornelius could pursue.
The 29-year-old man was arrested two years ago after he was found in possession of 2kg of methamphetamine when he landed at Penang International Airport on October 4 2013.
