The father of the 10-year-old boy who endured a 30-hour kidnap ordeal was yesterday revealed to be Yeung Kwok-fan, chairman and managing director of Wah Lee Resources Holdings Limited. Mr Yeung praised the police for rescuing his son who was ransomed for $20 million. A company spokeswoman said: 'He had full confidence in the police's ability, otherwise he would not have sought help from them.' She said the boy only suffered minor abrasions to his wrists and legs after being tied up for about 30 hours. The boy was bundled into a car by two men outside his school on Hong Kong Island as he waited for a bus to take him home at around 3pm on Monday. He was rescued by police on Tuesday night. It is understood the boy has a younger sister and lives with his parents in Tin Hau Temple Road. Last night, one of the four men arrested in Aberdeen and Kwun Tong on Tuesday was charged with kidnapping. The 29-year-old will appear in Eastern Court today. The other three were released on bail. Police were still hunting for a fifth suspect. Wah Lee Resources Holdings, engaged in the distribution of audio-visual products and electrical appliances for China, was listed on the stock market in January 1997. Mr Yeung, 42, was convicted and fined $20,000 in 1986 for having films with a false trade description when he was a major shareholder of trading company Nam Kiu Hong. He arrived from China about 20 years ago. His wife, Wu Yung, is executive director of the company.