A man who blew up himself with a device in his truck that also leveled an acquaintance's rural Cambria County home on Tuesday had previously tried to commit suicide last summer with a 1,600-pound explosive fuel bomb that didn't detonate.

Cambria County District Attorney Kelly Callihan said her office asked a judge to jail 40-year-old Bradley Kollar, of Hastings, after the suicide try, but his attorney objected and the judge agreed to let him remain free on bond while illegal chemical and stolen vehicles charges against him wound their way through the courts.

Kollar was scheduled to be sentenced on those charges Tuesday, but instead skipped court and drove his truck to the residence in Clearfield Township and detonated some kind of bomb, critically injuring the homeowner and one of his teenage sons.

Investigators are calling a house explosion in Cambria County on Tuesday a murder attempt and have not ruled out revenge in the bombing.

Kollar had pleaded guilty to possessing liquefied ammonia for a purpose other than agricultural or industrial.

The chemical was seized during a police raid of his property last March when police say they found what they believed was a clandestine methamphetamine lab.

Tuesday's explosion happened around 9 a.m. The Kepshire Road home was reduced to nothing but rubble and Cambria County Coroner Dennis Kwiatkowski said Kollar's body was found near the explosion.

One man was taken to Altoona Regional Health System before being flown to a Pittsburgh hospital. A second person is still at Altoona Regional.

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