Immigration authorities say they received no request for assistance from Hong Kong citizens after an explosion in Shanghai’s Pudong airport injured four people.
The Immigration Department is coordinating with the Beijing liaison office of the Hong Kong government, the Hong Kong Economic Journal reports.
Sunday’s blast was caused by a homemade bomb thrown by the suspect from a backpack, the report said.
The explosion damaged a check-in counter in Terminal 2 mainly used by flights to and from Hong Kong, Macau and Taiwan, according to state news agency Xinhua.
Footage from surveillance cameras shows white smoke coming out of a counter and passengers fleeing seconds before the blast.
A witness described panicked people scampering in all directions. He said he was knocked down by the suspect with a luggage cart.
The suspect later slashed his neck with a knife and was taken to Pudong District Hospital, where he remains in intensive care, the report said.
Four people were injured in the blast, including an airline passenger from the Philippines, the Shanghai local government said.
Police have yet to establish a motive and investigations are continuing.
The attack prompted police and fire personnel to seal off the the blast site and tighten security around the airport.
A flight scheduled to leave for Hong Kong at 4:30 p.m. did not take off until almost 8 p.m.
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