Taichung Mayor Jason Hu said Saturday that a shooting incident the previous day had destroyed the city's efforts over the years to maintain social order, and he vowed to take serious steps to crack down on gangsters. Hu's remarks came after an unknown assailant shot a biotech company executive Wong Chi-nan, 39, and one of Oung's friends Lai Jung-cheng, 40, at the company's office in downtown Taichung. Wong was pronounced dead on arrival at hospital, while Lai was said to be in critical condition. Taichung police have initially concluded that the incident was a fight among gangsters and that Oung had been targeted probably because he had fixed a gambling game. 'Over the years, the city has made great efforts to deal with gangsters and their connection to the sex trade, ' Hu said. However, there have been a series of shooting incidents in the central Taiwan city in the past three months, he noted. 'I don't like that gangsters are making Taichung a place to settle their scores, ' the mayor said, adding that he will work with other cities and counties and the central government to declare war on gangsters. 