Hongkong Post will review security at its 129 branches after an armed robber got away with $110,000 from a Tai Po post office on Thursday. It will consider hiring more security guards. Police security experts will inspect all post offices, which began accepting cash payments for government and utility bills in 2001. Security guards are stationed at post offices only in January and during the last week of April, July and October, when most people pay their taxes. A Hongkong Post spokesman said a comprehensive review, in consultation with police, would look at: The design of postal counters; The layout of post offices, most of which already have security cameras and alarms, and; Extending the periods during the year when security guards are posted. 'We are not in a position to disclose all the security options being considered, for obvious reasons, but we are working with the police and the security review will be comprehensive,' the spokesman said. However, he ruled out the possibility of security guards carrying guns. 'We have to look at the whole security system, not just whether a few will be armed. Carrying guns doesn't automatically mean better security.' The robber who struck at the post office in Ting Kok Road was armed with a pistol and wore a helmet. The offender took just 57 seconds to carry out the raid, in front of about 14 customers and staff, before escaping on a motorcycle. Police described the raid as the first postal robbery in 20 years. Until last year, almost all post offices had ceiling-to-ground counters, with window screens separating counter workers and customers. But since then, many have been modernised with open counters without window screens. The robber was able to jump over one such counter. Security expert Philip Curlewis, of Curlewis Associates International, said: 'The most important thing for them is to do a full security review to find out why it happened and how to avoid it in the future. And the review should be a ritual - at least an annual one. 'But I think that most post offices seldom do any security reviews.' James To Kun-sun, a Democratic Party legislator and deputy chairman of the Legislative Council's security panel, questioned why the government had forced banks to use closed counters yet allowed its own money-handling offices, including post offices, to have open counters. 'The open counters design may be friendlier, but they are not as safe. Obviously, there has to be give and take between comfort and security,' he said.