Police grab heroin, ketamine in raids published : 17 Dec 2020 at 04:00 6 The Narcotics Suppression Bureau (NSB) police seized about 300 kilogrammes of ketamine in a raid on a warehouse in Nonthaburi and 200kg of heroin in a subsequent search of a rented house in Huai Khwang district, in the early hours of yesterday, deputy national police chief Pol Gen Manu Mekmok said. About 1am, police raided a warehouse in tambon Thawi Watthana in Sai Noi district, Nonthaburi. They found and seized 39 sacks labelled flour, about 850kg in total. On close examination, a smaller bag of ketamine was found hidden in every sack of flour. About 300kg of ketamine was collected from the 39 sacks.