SINGAPORE - By pretending to be a specialist at Jurong Polyclinic, he managed to convince a patient there to down eight blue tablets that turned out to be Diazepam, a stupefying drug.
Oh Koon Shin, 52, who is jobless, then tried to steal items belonging to Madam Ching Sui Nai, 62, when she became drowsy on Dec 29 last year.
The items, worth about $222, included a mobile phone and two bank books.
Oh was jailed for two years on Monday after pleading guilty to one count of administering the drug to the retiree to commit theft.
The court heard that on Dec 28, another elderly woman had her necklace stolen at the polyclinic after she swallowed two blue pills a man had given her.
The polyclinic staff were told to keep a lookout for the man and they spotted Oh, who fit the description, the next day.
A staff member called the police and Oh was arrested after she saw him looking through Madam Ching's handbag and pulling a ring off the elderly woman's finger.
For administering the drug to commit theft, he could have been jailed up to 10 years and fined or caned.
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