Officials with Second Mile, a group foster home in founded by Sandusky in 1977, said the investigation was called off in light of the closure of the organization, the Philadelphia Inquirer reported Thursday.
In November, the organization called for an investigation by former Philadelphia District Attorney Lynne M. Abraham to look into Second Mile's "internal policies, procedures, and processes" and what past leaders knew and when after the news of Sandusky case broke, said chief executive David Woodle.
"We need to find out how deep this went, who knew about it, when they found out about it, and what was done or not done," Abraham said at a November news conference. "How was it possible for little kids to be imperiled and we didn't know it?"
However, Woodle said after Second Mile announced in May it was closing its doors, the investigation was no longer necessary.
"We're in a different situation now," Woodle said. "We're getting ready to go out of business."
Sandusky is currently waiting to be sentenced for 45 counts of child sexual abuse for the abuse of 10 boys he met through the charity.
Puzzle-maker slips 'Murdoch Is Evil' into Rupert Murdoch's Sunday Telegraph
Wisconsin business offering 'therapeutic cuddling' forced to close