'If you are watching this video, it means I have been kidnapped.'

The angry passenger allegedly bit a flight attendant on a Qantas flight between Melbourne and Dallas.

Another 32 passengers were injured.

Messages to the chatbot will leave no trace.

An Antarctic scientist at the Jang Bogo station allegedly pulled a makeshift knife on a colleague (Picture: Getty Images)

The royal will be kept in for observation over the weekend.