The bags were discovered at eight places along Interstate 80 and Interstate 380 in the Pocono Mountains, the Pocono Record reported. The first was discovered at about 9 a.m.

Lt. Robert Bartal said the bags were found along a five-mile stretch of I-80 and a 15-mile stretch of I-380. I-80 crosses the Poconos on its way from the George Washington Bridge to San Francisco, while I-380 branches off in the Poconos to Scranton, Pa.

Bartal said investigators believe all the parts were from a single body, probably a light-skinned female. A head was found on I-380.

We're not positive on the female portion of it at this point, he said.

I-380 was closed for several hours, causing massive traffic jams.