FREDERICKSBURG, Pa. -- As of mid-afternoon Saturday, Pennsylvania state police say three people were killed in a weather-related pileup involving more than 50 vehicles on Interstate 78 in central Pennsylvania.
Trooper Justin Summa said an unknown number of critically injured patients were flown to six or seven hospitals and 70 more were transported by ambulance to other facilities.
He said several buses of stranded passengers were taken to a warming shelter at a firehouse in the area.
The crash happened about 9:45 a.m. Saturday in the eastbound lanes of the interstate in Bethel Township, about 75 miles northwest of Philadelphia.
The pileup left tractor-trailers, box trucks and cars tangled together across three lanes of traffic and into the snow-covered median.
Trooper Adam Reed said investigators believe that "passing snow squalls played a role in causing the crash."