Lo Hsing Han died yesterday in Yangon, the source, who spoke on condition of anonymity because he did not have authorisation to speak to the media, said, citing a relative of the former drug kingpin. Lo Hsing Han was believed to be in his mid-70s. The cause of death was not immediately known.
Lo Hsing Han's involvement in the drug trade began more than four decades ago.
With one of the best-armed militias in Myanmar, also known as Burma, he quickly became one of the region's most powerful drug kingpins.
Thai police arrested Lo Hsing Han in northern Thailand in 1973. He was handed over to the Burmese government and sentenced to death, commuted later to life in prison, for treason.
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In 1992, Lo Hsing Han and his son Stephen Law founded the conglomerate Asia World, allegedly as a front for their ongoing dealings in the drug trade, the author said.
They quickly became two of Myanmar's biggest business tycoons, helping prop up the military junta, winning contracts to run ports, build highways and oversee airports.
The US Department of Treasury, dubbing Lo Hsing Han the "Godfather of Heroin," put him on the financial sanctions list in 2008.