The FBI are in the midst of a search in Stafford Township in connection with a missing persons' case from the 1970's.

The search is being conducted on Myetta Landing Road in Edwin B. Forsythe National Wildlife Refuge by Route 9 in Stafford Township. Investigators are searching the area for evidence connected to the case.

The case dates back to April 1975 when two developmentally disabled boys went missing from the New Lisbon State School in Burlington County. The boys were Steven Anderson, 17 at the time, and David Williams, 12 at the time.

Photos have been released of what the boys would look like today.

David Williams at 48 years old.

MissingKids.com

Steven Anderson at 56 years old.

MissingKids.com

No details have been released at this time.

Source: 6ABC.com

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