Fox News Weather Center

BREAKING: Massive pileup shuts down I-78 in Lebanon County, Pennsylvania

A multi-vehicle accident involving more than 20 vehicles occurred amid snow showers and brutal cold, led to the shutdown of Interstate 78 in Lebanon County, Pennsylvania, Saturday morning.

The accident was reported around 9:45 a.m. Saturday EST. Both eastbound and westbound lanes have been closed due to the accident, according to PennDOT 511.

Several ambulances, rescue units and four medical helicopters have been dispatched to the crash site, according to Penn Live. Three people are reportedly dead.

"Weather reports from nearby Fort Indiantown Gap indicate persistent snow showers during the 8 a.m. hour with a few snow showers during the 9 a.m. hour," AccuWeather Senior Meteorologist Kristina Pydynowski said.

"Due to the cold overnight, any accumulating snow from these snow showers could have created slick spots on the interstate."

First responders and crash victims will face dangerous cold at the site of the multi-vehicle accident.

AccuWeather RealFeel® temperatures will be below zero the rest of day.

"Such cold will be dangerous to those who are not properly bundled up," Pydynowski said. "Hypothermia and frostbite are both risks."

Additional flurries will also be streaming into south-central Pennsylvania throughout the day.