A New Jersey man about to stand trial on charges he sexually abused several teenage boys has reached a plea deal.

Hunterdon County Prosecutor Anthony Kearns III says 57-year-old Frank Venable pleaded guilty Wednesday to charges involving six victims. Venable -- who is now serving a 4-year prison term for unrelated sex abuse charges -- faces another 13-year term when he's sentenced later this year.

Venable also will be under Megan's Law supervision for life.

Venable pleaded guilty to three sexual assault counts, two counts of child endangerment and a criminal sexual contact count. That came two days after his trial was to start.

A former volunteer firefighter, school bus driver and businessman, Venable was first charged in February 2008 with molesting three boys. More alleged victims then came forward.

(Copyright 2012 by The Associated Press.  All Rights Reserved.)