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,BBC reports.
Police said a man, identified only as Mr Xu, 41, was taken into custody and had a history of mental illness.
Air China flight CA1350 was heading to Beijing from Changsha but had to make an emergency landing in Henan province.
No passengers or crew were harmed during the incident.
Photos circulating on Chinese social media showed a man holding a cabin crew member around the neck using the pen as a weapon.
"The man onboard flight CA 1350 had a sudden [flare-up] of mental illness when he held a flight attendant hostage," said the Henan public security bureau in a statement on Weibo.