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A woman and two teens charged in connection with the shooting death of a Moab man are scheduled for preliminary hearings in September.

The two teens, Brody Blu Kruckenberg, and Charles Anthony Nelson, both 16, have been charged as adults with one count each of first-degree felony murder for the March slaying of Gregorio Salazar Campos, 33, whose body was discovered April 7 in the Colorado River.

Corina Dawn Yardley, 44, who was the victim's girlfriend and who is Kruckenberg's mother, is charged with two counts of second-degree felony obstruction of justice.

Seventh District Judge Lyle Andersen on Tuesday set preliminary hearings for all three defendants on Sept. 25.

A hearing for the two teens will begin at 9 a.m. Yardley will have a separate hearing that will begin when the teens' hearing has concluded.

Campos was shot three times in the head on March 25 as he slept in Yardley's bed at her mobile home at 608 River Sands Road, according to a jail probable cause statement.

Nelson was allegedly persuaded to fire the gun by his friend, Kruckenberg, according to information received by the Grand County Sheriff's Office and included in the probable cause statement.

An informant told police that Nelson claimed that on the day of slaying, Kruckenberg had contacted him saying Campos was asleep and asking Nelson to come over, according to jail documents.

Nelson claimed that Kruckenberg said, "Let's kill him," but that Kruckenberg could not do the killing and asked Nelson to do it, according to the jail documents.

"[Nelson] said it was not his deal, but was talked into doing it," the jail documents state.

Nelson then told the informant how he pointed the gun through a crack in the doorway of Yardley's bedroom and shot Campos three times, according to jail documents.

Yardley allegedly cleaned blood from the wall and the carpet in the bedroom and helped the boys dispose of Campos' body by letting them use her truck. She also removed the mattresses and bedding from the bedroom scene and bought a new mattress shortly after that, according to jail documents.

No motive for the homicide was revealed in the jail documents.

The teens each are being held in lieu of $250,000 cash bail. Yardley is being held in lieu of $50,000 cash bail.

At a preliminary hearing, prosecutors must put on evidence demonstrating there is probable cause that the defendants committed the crime in order to advance the case to trial.