Sonam Zam is among seven foreigners wanted for their suspected involvement in the death of a Bhutanese man, whose body was found in a suitcase in the canal here this month.
A large quantity of crystal methamphetamine was found in the stomach of the dead man. Police believe he was trying to smuggle the drugs in condoms that burst and killed him.
According to a letter sent to the Indian embassy here, Sonam fled Thailand for Delhi on April 7 on a Thai Airways International flight.
Indian Embassy sources confirmed to PTI that the letter had been received.
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The letter said Thai authorities had immediately contacted Indian officials to stop the woman and send her back to Bangkok for prosecution.
Bureau commissioner Nathathorn Prousoontorn said yesterday that Indian immigration officers apprehended the suspect on arrival in Delhi. Nathathorn said he has contacted the relevant authorities to send her back to Thailand.
However, Bhutanese authorities were later contacted by their Indian counterparts about the arrest and Bhutan's Foreign Ministry opposed her handover saying the woman has denied the smuggling allegation, Nathathorn said.
It was the first time Bhutanese and Nepalese drug traffickers had been detected in Thailand, the Bangkok Post reported citing the police.