Lee Yuk-shan, a former insurance agent, left her Fanling home on the evening of August 27, 2009. It was the last time her husband saw her. He called police four days later to report her missing. Two years on, there is still no sign of her and police fear the worst. According to a police reward notice, Lee had a 'hot dispute' with her boyfriend at his home in Tong Tau Po Tsuen in Yuen Long on August 29. She called a friend that day and said she feared for her safety. Crime squad officers arrested her boyfriend, but the jobless man whom she had met about six months before her disappearance was released unconditionally last year. The whereabouts of Lee, now 43, remain unknown, prompting police to issue a HK$100,000 reward. There is no immigration record that Lee, the mother of a teenage boy, left Hong Kong through legal channels, police said. 'Over the past two years, she has had no contact with her family and she has not withdrawn any money from her bank accounts,' a police officer said. 'As she has vanished for two years, we do not rule out the possibility she may have been killed or something untoward may have happened to her.' Detectives from the New Territories North regional crime unit are investigating. The police reward notice said Lee's son received a text message sent from her phone at 11pm on August 29, 2009, saying 'she was unhappy and would be away from Hong Kong for a few days'. 'It's possible that the message was sent by someone who harmed her,' a police officer said. 'We want to gather as much information as possible and look into all possible clues relating to the case.' Lee's is the second case of a woman disappearing over the last two years for which a reward is being offered for information. A HK$100,000 reward has been offered as part of the effort to find Cheng Tsz-mei, now aged 40, who vanished last year. At about 6pm on October 30, she told her son that she would go to a barbecue at a friend's house at Ma On Kong, Ho Pui Tsuen, Pat Heung. She called another friend at 8pm on the same day when she arrived in Yuen Long. What happened to her then is not known and police fear for her safety.