AN armed robber forced the wife of a medicine company magnate to open a safe before escaping with $3 million in cash and jewellery yesterday. Louis Lo Siu-fai, of the Tung Fong Hung group, was on a business trip in London while his wife Cheng Toi-mei, 32, and a maid were in the three-storey Peak villa. The masked man scaled a 2.5-metre fence of the Mount Austin Road villa before prising open a balcony door and entering the mahjong room on the second floor shortly after 3.30 am. When Mrs Lo woke up to get some water, she was grabbed. The robber pointed what he claimed was a pistol at her and demanded she reveal the security code of the safe. He fled with three diamond rings, three Cartier watches and other jewellery and gold ornaments as well as $200,000 cash after tying her hands and gagging her. Police said the maid slept undisturbed while the robbery took place. Senior Inspector Leung Wing-ki of Central district crime squad said: 'The security measures inside and outside the house are no good. 'There was only one Gurkha guard in the estate. He was guarding not one house but 24. 'Our colleagues from the Crime Prevention Bureau will approach the estate management company on how to improve security measures.' A Colliers Jardine Management spokesman said he would not comment on security matters.