The killing of a guard during a robbery on Wednesday has raised questions over whether bank security personnel should carry arms. The Hong Kong Buildings Management and Security Workers General Union, which represents more than 1,800 security guards, said it opposed guards carrying guns inside banks. Chief executive Wong Ying-yu said: 'I don't think bank guards need to be armed. It's not right to have a gunbattle in a bank. For the safety of customers, staff and guards themselves, security personnel should not open fire inside banks even if an armed gang is taking money. 'I think armed guards have a deterrent effect for some rookie robbers but not seasoned ones.' Father-of-four Zafar Iqbal Khan was shot dead by a robber at the Belvedere Garden branch of the Hang Seng Bank in Tsuen Wan on Wednesday. Khan did not fire his weapon. The robber took $490,000 and US$1,000 (HK$7,800) from drawers before fleeing. Legislators James To Kun-sun and Lau Kong-wah agreed with Mr Wong. Mr To said: 'It is not necessary to use Remington shotguns to threaten unarmed thieves.' Another legislator, Ip Kwok-him, questioned whether armed guards had received appropriate training. A spokeswoman for Hang Seng Bank said it would continue to use armed guards. 'We will upgrade our security measures but not lower them,' she said. Higher screens were put up at the Belvedere Garden branch yesterday. A police spokesman said officers regularly held seminars with banks on security measures and gave advice to guards on how to handle emergency situations and protect themselves. Police distributed questionnaires at the crime scene yesterday and continued to hunt for the robber last night. The victim's brothers, relatives and friends, the bank's chief executive, Vincent Cheng Hoi-chuen, and other bank officials paid their last respects at a ceremony at the Kowloon Mosque in Tsim Sha Tsui yesterday. Last night, Khan's body was returned to Pakistan, where his wife and children live.