Drug arrests in Shanghai soared 88 per cent in the first 11 months of this year compared to the same period last year, city police said. Seizures of illegal drugs had also jumped to match the arrest figures, Shanghai Public Security Bureau spokeswoman Fang Dinghua said. Three heroin traffickers were executed this week after being sentenced, an official at the No 1 Intermediate People's Court said. Two of the offenders, Hui Jiancheng and Feng Yulian, bought heroin in Yunnan province and were caught with the drug in Shanghai. Police have said capital punishment could be stepped up to help combat drug crimes. Ms Fang said heroin remained the most-abused drug. She said use of Ecstasy and 'ice' was also on the rise and police would not ease up in their crackdown against drug offenders in the new year. A spokesman at the Shanghai Higher People's Court said poorly educated and unemployed people accounted for most of the drug users in the city, adding most offenders were men under 30. Analysts say rising unemployment and the dismantling of the state-planned economy have fuelled the city's drug problems.