Shanghai passengers meet tight security

Shanghai Pudong International Airport has beefed up security following two minor explosions on Sunday afternoon at about 2:26 pm.

"For the safety of passengers and aircraft, the Pudong International Airport has strengthened its security check measures. Passengers are asked to arrive at the airport earlier and to cooperate with the security checks," the Shanghai Airport Authority said on Monday.

The announcement was made one day after two bombs made from beer bottles filled with gunpowder exploded at a check-in counter at the airport's No 2 terminal, injuring four people.