KUALA LUMPUR, Sept. 25 -- Singapore has executed Malaysian national Datchinamurthy Kataiah over his conviction for trafficking heroin into the country.

The execution went ahead at 3pm, despite the republic deciding earlier today to postpone it.

His family submitted repeated petitions for clemency to Singapore's president, but were unsuccessful.

According to the republic's Central Narcotics Bureau, the 39-year-old was found guilty of possessing at least 44.96 grammes of diamorphine, or pure heroin, for the purpose of trafficking.

Authorities said the amount of heroin seized was enough to sustain the addiction of about 540 drug users for a week.

Under Singapore's Misuse of Drugs Act, trafficking more than 15 grammes of diamorphine carr...