At least one person was killed late Monday in a pileup involving at least 15 cars on the New Jersey Turnpike. 

The pileup happened on the southbound side of the highway shortly after 9 p.m. local time, authorities said. 

The accident occurred during a mix of rain and snow flurries and below-freezing temperatures in Cranbury, a township just southwest of New York City. The vehicles involved in the crash included several cars, four tractor-trailers, two box trucks and a fully loaded bus.

The New Jersey Turnpike Authority told the Associated Press that at least one tractor-trailer jackknifed near a service area. At least one vehicle was reported to be on fire. 

All southbound lanes on the Turnpike were closed until further notice. 

The Associated Press contributed to this report.

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