Patrolman Jason W. Kreig, of Phillips Avenue in Browns Mills, was charged on Friday with two counts of aggravated sexual assault and two counts of endangering the welfare of a child.
One incident reportedly took place in 2011, the other sometime between mid 2007 and early 2008.
Authorities are not releasing any information about the victim.
Kreig is being held on $400,000 bail and awaiting an initial first appearance in Burlington County Court.
Kreig has been employed as a patrolman with the Pemberton Township Police Department for seven years. He has been suspended without pay from the pending the outcome of the investigation.