HANOI, Sept. 28 (Xinhua) -- Police of Vietnam's northern Son La province said on Friday they detained three local men on Thursday when they were transporting 10 cakes of heroin.

The trio included Hang A Giong, 38, Hang A Ho, 34, and Hang A Ly, 29, all from Son La's Muong La district. The provincial police were further investigating the case.

According to the Vietnamese law, those convicted of smuggling over 600 grams of heroin or more than 2.5 kg of methamphetamine are punishable by death. Making or trading 100 grams of heroin or 300 grams of other illegal drugs also faces death penalty.