NEWARK, N.J - Authorities say a New York City man carrying a knife in his pocket jumped over a barrier and ran onto the tarmac at Newark Liberty International Airport before being tackled by a police officer.

Thirty-nine-year-old Xiang Xun Shao of Manhattan was charged with defiant trespass and a weapons offense after the incident Saturday night.

He was later taken to a hospital and was undergoing a psychiatric evaluation.

A spokeswoman for the Port Authority of New York and New Jersey, which runs the airport, says the man was initially seen walking around near a gate where vehicles access the tarmac area. The spokeswoman says he then jumped over a retractable metal barrier and briefly ran onto the tarmac before being caught near Terminal C.

No planes were delayed as a result.