Hongkong Post has disciplined two postmen and launched a review of its delivery security procedures after three mailbags were stolen in just over a week. Disciplinary action was taken against the pair after their bags - containing more than 400 pieces of mail - were stolen when left in the lift lobbies of buildings in Quarry Bay and North Point on March 19 and 20. They were punished for failing to follow proper procedures for storing the bags, which were left near guard posts in the lobbies while the postmen delivered mail in the buildings. A third postman, whose bag was stolen in Wan Chai on March 26 but later recovered, was not disciplined after an investigation showed no human error was involved, Hongkong Post said. 'According to our investigation, the pouches involved in two of the incidents were not put at the approved locations,' it said. Hongkong Post said briefings had been held following the incidents 'to alert our postmen to be vigilant on mail security while carrying out their delivery duties'. Detectives are investigating the thefts. Under post office guidelines, postmen can leave mailbags at authorised points such as management offices or guard posts, which have security guards and security cameras. Assistant Postmaster-General (Postal) Michael Chung Man-kit said yesterday the post office was reviewing security at such storage points. Asked whether the senders or receivers of the stolen mail would be compensated, he said all cases would be handled individually, under the Post Office Ordinance. The postmen's union said members were having to work longer hours and walk longer distances to complete their work because of the security review. As postmen were no longer able to use the designated drop-off points they had to go to nearby post offices to collect mail or wait for delivery vans, the Union of Hong Kong Post Office Employees said. Vice-chairman Lam Po-chun said postmen were required to deliver an average of 2,500 mail items a day. He said the post office should provide extra manpower and more delivery vans.