Pop idols' arrests for drug possession could help pull youngsters away from drugs, a social worker said yesterday after an actress was arrested for possessing ketamine. Lok Poon said publicising pop stars' drug habits would create a positive result. 'Being charged for drug possession generates a big negative impact on their career. This definitely doesn't encourage youngsters to do drugs.' Another social worker, Paul Yang Kwok-cheung, said that if these arrested young idols admitted their mistakes, they could set a good example for youngsters. 'It's more common for them to do soft drugs as a form of entertainment or recreational activity,' he said. 'They thought that chemical substances such as ketamine or marijuana were not addictive. But if those arrested stars show they truly want to be good, it brings a positive note to the matter.' Taiwan-born actress Cherrie Ying Choi-yee was released on bail on Saturday after being arrested for drug possession. Ying, 21, was suspected of possessing 0.8 grams of ketamine worth $100. She was in a car with two male friends, surnamed Lam, 23, and Lau, 24, and a female friend, surnamed Chan, 23. It was reported that while the car passed a police road block in Kowloon Tong, someone allegedly threw a packet of white powder out of the car. The four were questioned by police. Ying was released on $1,000 bail, while Lam, Lau and Chan were released unconditionally. Ying, who signed with China Star four years ago, has worked with stars such as Andy Lau Tak-wah, Lau Ching-wan and Louis Koo Tin-lok on profitable commercial movies such as Professional Killers and Fat Choi Spirit, both directed by Johnnie To Kei-fung. China Star said the case had been given to lawyers but insisted it would not affect Ying's work. Earlier this year rising Canto-pop singers Roy Chow Wing-hang and Deep Ng Ho-hong were arrested and found guilty for possession of dangerous drugs.