China Airlines Boeing 777
Credit: GC Images

An Air China flight was diverted on Sunday due to a passenger threatening the plane’s crew with a fountain pen, according to Reuters.

The flight, bound for Beijing from Changha, made an emergency landing at Zhengzhou Xinzheng International Airport, in central China, around 9:58 a.m. local time. No passengers or crew were harmed in the incident.

The plane landed about an hour after the man threatened the crew, according to the Hong Kong Free Press.

The Civil Aviation Administration of China said in a statement on its website that the 41-year-old man, who is only identified by his last name, Xu, used the pen to hold a flight attendant “under duress.” The man allegedly also had a “history of mental illness,” according to the statement.

“The incident was successfully dealt with by 1:17pm, and passengers and crew members are safe,” the statement concluded.

According to ABC News Australia, a passenger told the Xiaoxiang Morning Herald that the incident happened in the first or business class cabin, but they were unable to see.

Another passenger recounted being awoken on the flight by a scream, the Evening Standard reported.

Photos of the incident have been circulating on Chinese social media sites, one of which was acquired by the Hong Kong Free Press. Details on the attack and what happened to the man after being escorted off the plane have not yet been reported.