Update: Mystery ice chunks fall from sky in Pa.

CUMBERLAND CO., Pa. -- A mysterious ice chunk fell from the sky last week, landing in an auto dealership in Cumberland County, Pennsylvania.

It happened just after 4 p.m. Friday at McCafferty Ford-Kia located in the 6300 block of Carlisle Pike.

York College professor Dr. Bill Kreiger vows to figure out where it came from.

PHOTOS: Ice chunk falls from sky, crashes into car at Pa. dealership

He thinks it could have come from a plane or it was somehow an act of nature.

The rare phenomenon is known as a megacryometeor, where chunks of ice strike each other at high speeds in the atmosphere, and fall to the ground.