They were charged yesterday with trafficking in Class A controlled drugs. A total of about 389g of ‘Ice’, 8g of heroin, 195 ecstasy tablets and two Erimin-5 tablets, estimated to have a street value of at least S$44,000, were seized.

The authorities said in a joint statement here today that police detected unusual unmanned aircraft activity in the vicinity of Kranji Reservoir Park at about 5.45pm on June 17.

They observed an unmanned aircraft hovering in the air, with a bag attached to it.

The police subsequently arrested two men, aged 29 and 34, who were believed to be the operators of the drone. An assortment of controlled drugs were later found in a car belonging to one of the men.

Flight data retrieved from a phone showed that the unmanned aircraft had been flown from Kranji to Johor Bahru and back again to Kranji.

The next day, a 24-year-old woman and a 40-year-old man, both Singaporeans, were arrested.

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