Two off-duty crime reporters died yesterday after their motorcycle crashed into temporary guide posts that reroute traffic during construction of a new flyover in Causeway Bay. Chan Ho-ming, 28, and Wong Siu-bond, 30, of the Oriental Daily News, were travelling eastwards along Victoria Park Road just before 6am when their bike apparently ran out of control and rammed into the posts at the Victoria Park Road flyover. An investigator said the bike continued for about 10 metres and then ploughed into railings at the bottom of the flyover. He said the two men were believed to have been thrown off the bike on the first impact. They were taken to Ruttonjee Hospital with severe head injuries and later declared dead. Investigating officers were still trying to establish last night who was driving the bike at the time. The Causeway Bay flyover was closed to traffic for more than two hours after the accident. The Hong Kong Island traffic unit is investigating and police have appealed for witnesses to contact them on 31068800. Route changes in the area have been in place since June 13 to make way for construction of a two-lane flyover to ease traffic jams around the Cross Harbour Tunnel. The work is expected to take two years. In a separate case, a 42-year-old expatriate was treated at Ruttonjee Hospital for injuries to a shoulder and arm after a 60cm by 90cm piece of concrete broke off the canopy of a building in Lockhart Road, Wan Chai just before noon. Just after 12.30pm, a window fell from the kitchen of a Broadway unit in Block 8 of Mei Foo Sun Chuen in Lai Chi Kok. No one was injured. Police later arrested the 42-year-old woman tenant of the unit.