Hans Benjamin Singer, a member of the polygamous family that bombed a Marion, Summit County, LDS Church building 2 1/2 years ago, is free on a $5,000 bond pending his trial on the felony charge of possessing an unregistered explosive.

U.S. Magistrate Ronald Boyce released Singer on the non-surety signature bond Monday after a pretrial report showed Singer's employer and a family friend agreed to maintain contact with Singer, counseling him with any problems and concerns.Singer will continue to live on the family's farm in Marion with his wife, sisters and their children.

Boyce ordered Singer to check in with the Park City Police Department once a week, get rid of all firearms and explosives on the farm and stay away from drugs and alcohol until his trial.

Authorities arrested Singer Thursday after a grand jury indicted him for possessing the explosive. Singer pleaded not guilty to the charge.

The indictment stems from an Oct. 13 incident in which Singer's pickup truck collided with a pole near Kamas, Summit County. Authorities investigating the accident found an 8-inch pipe bomb in the console of Singer's truck, said John Minichino, resident agent in charge of the Salt Lake Office of the Bureau of Alcohol Tobacco and Firearms.

"The pipe contained smokeless gunpower and rifle primer. It was connected to a fuse and wrapped in black electrical tape," Minichino said.

"It could kill anyone in a confined area who was within a couple feet of the placement of the bomb," Minichino said.

Singer's attorney, Steven Kuhnhausen, said the bomb has been lying around the Singer farm since before the bombing of the Marion church in January 1988.

"I understand from talking to the witnesses that this was something that was overlooked in the search after the siege," Kuhnhausen said. Singer's family held law officers at bay at the Singer farm near Marion following the bombing of the church. The siege resulted in the death of Corrections officer Fred House.

"Everyone I've talked to - the Singer family and friends - have seen it sitting up there. They just thought it was an innocuous object, a piece of metal with tape wrapped around it. Apparently they didn't know what it was."

Federal officials are analyzing the bomb to determine its age, Minichino said. "It will be awhile before we have our findings on the age of it exactly," he said.

A conviction on a federal charge of bomb possession carries a maximum penalty of 10 years imprisonment and a $250,000 fine.

Singer's mother, Vickie, brother John Timothy, brother-in-law, Addam Swapp, and Swapp's brother, Jonathan, are serving terms in different federal prisons for their roles in the bombing of the Marion church, House's slaying and the standoff.

Singer, who was 15 at the time of the siege, was held under house arrest at the home of Adam Swapp's parents for two months in 1988 after U.S. District Judge Thomas Greene found him in contempt for refusing to testify against his family at a grand jury hearing.