John Jackey Worman, the Delaware County man who was convicted and sentenced in federal court to 120 years in a child pornography case that prosecutors called "horrifying," was back in a county court today.

Worman, of Colwyn, entered a negotiated guilty plea in cases involving four victims - two infants and two females between ages 10 and 15 - to rape, involuntary sexual intercourse, and rape of a child. He will receive 17 to 35 years when he is formally sentenced in March.

The state sentence will run concurrent to his federal sentence.

Worman was sentenced in August in U.S. District Court for manufacturing and possessing child pornography involving what prosecutors called "unspeakable acts" of child exploitation.

In 2006, after one of Worman's young victims came forward, Delaware County and FBI investigators found 1.2 million computerized images of child pornography and 11,000 video clips of Worman as he sexually abused children. One victim was only six weeks old.

He abused at least 12 children, many of whom knew him as a surrogate father.

Contact staff writer Mari A. Schaefer at 610-892-9149 or mschaefer@phillynews.com.