Federal authorities have been probing allegations of crimes involving the Fundamentalist LDS Church and its leader Warren Jeffs for years — but have been unable to develop enough probable cause to launch a full-scale investigation or bring charges.

"Those cases where you hear rumor and innuendo about child brides and corruption, we have to have reasonable suspicion to open an investigation," U.S. Attorney for Utah Brett Tolman said Thursday. "Beyond that, we have to have probable cause to even get search warrants and grand jury subpoenas. That we have not been able to establish on numerous occasions."

In an extensive interview with the Deseret News on Thursday, Tolman and Tim Fuhrman, the special agent-in-charge of the Salt Lake City office of the FBI, detailed their efforts to investigate crimes within the FLDS Church. They also spoke against the need for a federal task force on polygamy-related crimes, despite a push by the U.S. Senate majority leader and the Utah and Arizona attorneys general.

"The crimes that are being alleged or that there is suspicion, these are predominantly state crimes," Tolman said. "I think it's a rush to judgment to think that a federal task force is the answer."

Investigations

The U.S. Attorney for Utah confirmed to the Deseret News his office has looked at the FLDS Church for possible violations of Mafia-style racketeering and corruption laws.

"We remain open to pursuing that line of investigation," Tolman said. "Investigating a RICO (Racketeer Influenced and Corrupt Organizations Act) charge is labor intensive, requires someone on the inside and has to be done with great patience. It's certainly not something that would result in a raid on the FLDS and all the members and families in the community. We still would have to provide probable cause on each and every individual that's the target of the investigation."

Right now, Tolman said that all his office has is suspicion and nothing more. Child abuse, rape and incest are all state-level crimes. So is bigamy.

"We have the ability to prosecute transferring or crossing state lines for purposes of sex, and we had a case a couple of years ago that we investigated," Tolman said. "When the young woman was interviewed, she indicated that no sex had ever occurred. At that point we're very limited outside some evidence to help us establish probable cause."

It is a problem their state-level counterparts can relate to.

"That's been the challenge with these closed polygamy groups. You can't infiltrate them," said Kirk Torgensen, chief deputy of the Utah Attorney General's Office. "Getting intelligence and information is difficult."