Four undocumented men were arrested in Newark as part of a federal crackdown targeting individuals with histories of child exploitation.

The Department of Homeland Security said the arrests were made last week by ICE agents.

Officials said the operation is focused on what they call "illegal aliens with histories of child exploitation."

Four others were taken into custody last month.

ICE is now working to deport all eight individuals.

Each person arrested will be placed on the state's sex offender registry.