Chinese authorities have released details of a man who threatened airline crew with a fountain pen, leading to the diversion of an Air China flight on Sunday.
The security bureau added that the flight was forced to make an emergency landing at 09:58am local time on Sunday and was diverted to the Chinese province of Henan. All passengers were safely escorted off the aircraft by 10:50am.
Mr Xu, who is said to be from Hunan's An Hua county, was later taken into custody with police now looking into the incident. The security bureau did not add when, or if, he had been released.
Hao Junbo, a Beijing-based lawyer, told news outlet the Beijing Morning Post that the man would not be held criminally liable if he was proven to have been suffering from a mental illness at the time.