NEW ORLEANS (AP) — Authorities have expanded an investigation of clergy sexual abuse in the Roman Catholic Church in New Orleans to include senior church officials suspected of shielding predatory priests for decades and failing to report their crimes to law enforcement.

Louisiana State Police carried out a sweeping search warrant last week at the Archdiocese of New Orleans, seeking a long-secreted cache of church records and communications between local church leaders and the Vatican about the church’s handling of clergy sexual abuse.

The search signaled a new phase of the investigation that will seek to determine what particular church leaders, including current and former archbishops, knew about claims that the warrant describes as “ignored and in many cases covered up.”

The warrant contained several new details about the sex-trafficking investigation, including claims that some victims were sexually assaulted in a seminary swimming pool after being ordered to “skinny dip.” Separately, the warrant says, predatory priests developed a system of sharing victims by giving them “gifts” that they were instructed to pass on to clergymen at other schools or churches.