(AP) - Authorities in northern New Jersey say they have arrested 21 people in a five-county child pornographyinvestigation.

Bergen County Prosecutor John Molinelli says a two-monthoperation, which began in February, focused on people tradingpornography via the Internet depicting young children engaged insexual acts. Investigators say the youngest child depicted was a2-year-old.

The conclusion of the operation was announced Thursday. Five ofthose arrested were juveniles.

Molinelli says his office worked closely with New JerseyAttorney General Anne Milgram and the state police. Investigatorsin Passaic, Union, Sussex and Morris counties also participated inthe operation.