NEW : Police are investigating the threat to three Chinese airlines . Five different flights to the southern city of Guangzhou are affected . Two flights are rerouted and two are delayed . The state - run news agency says the airlines have ` ` false bomb threats ''
NEW : Police are investigating the threats to three Chinese airlines . Five different flights to the southern city of Shenzhen are affected . Two flights are rerouted and three are delayed . The state-run news agency says the airlines received `` false bomb threats ''