3 injured in small explosion at Shanghai's Pudong airport

A Chinese paramilitary policeman guards a closed off area of Shanghai's Pudong airport after an explosion on Sunday, June 12, 2016. A small explosion at a check-in area of the airport injured a few people Sunday, Chinese authorities said.(AP Photo/Paul Traynor) (The Associated Press)

FILE - In this Jan. 20, 2012, file photo, passengers queue up for a security check at Pudong International Airport in Shanghai, China. A small explosion at a check-in area of Shanghai's Pudong airport injured a few people Sunday, June 12, 2016, Chinese authorities said. (AP Photo/Eugene Hoshiko, File) (The Associated Press)

Ni Bowen stands for a photo during an interview at Shanghai's Pudong airport Sunday, June 12, 2016. A small explosion at a check-in area of the airport injured a few people Sunday, Chinese authorities said. Ni Bowen, who had been waiting to check into his Philippine Airlines flight when the explosion happened, said passengers ran for safety after a loud bang rocked the hall.(AP Photo/Paul Traynor) (The Associated Press)

Chinese authorities say three people have been injured by a small explosion at the check-in area of Shanghai's Pudong airport.

The airport's management said on its microblog that the blast occurred at 2:20 p.m. (0620 GMT) in the airport's T2 check-in area and appeared to have been caused by some sort of home-made explosive.

It said the three people had been taken to a hospital but gave no word about their condition. It said there was no disruption to flights in or out of the busy airport.