An Air China flight from Changsha to Beijing was diverted to Zhengzhou, central China's Henan Province, due to "illegal interference" on Sunday.

Flight CA1350 landed at Zhengzhou Xinzheng International Airport at 9:58 a.m. and all the passengers were returned to the terminal buildings safely, Henan Airport Group said in a statement, adding that the airport was operating normally.

No further details about the diversion were released.

The plane departed Changsha, capital of central China's Hunan Province, at 8:40 a.m. and was expected to arrive at Beijing airport at around 11 a.m.