No action will be taken against the South Australian Cricket Association (SACA) or the SANFL following the arrest of an umpire last month for allegedly possessing or controlling child abuse material.
The 40-year-old accused from Adelaide's south was also charged with failing to disclose his working with children status.
He had worked for both SACA and the SANFL.
Both organisations launched reviews into their screening processes after the charges were laid.
In a statement on Wednesday, SA Police said its investigation was now closed.
Both organisations had potentially faced fines of up to $120,000 for allegedly employing a person without a valid working with children check.
When contacted for comment, SACA referred the ABC to the statement it released late last month.
"SACA has been working with SA Police since being notified of the arrest of the man in question," the organisation said.
"We are undertaking a full audit of our systems and processes and all umpires are being cross-checked directly by SACA staff.
"No umpire will be working without appropriate and current checks in place."
The SANFL said on Wednesday it was working the Department of Human Services to implement new protocols across the league.
The SANFL also said it had believed umpires in its senior community competitions did not need working with children checks, even though some players were children.
But after seeking clarification from authorities, it will now require all officials to have working with children checks.
