A dispute over living expenses is the apparent motive in the shooting death of a teenage boy whose body was found Monday morning.

Police have three people - two juvenile boys and an adult woman - in custody.The woman and one of the juveniles were roommates of Roy David Dunsmore, 17, Bluebell, Duchesne County, whose body was found by a man looking for aluminum cans in a field off the west frontage road of I-15 near 1500 North.

The victim had been shot several times with a .22-caliber pistol.

Police believe Dunsmore's acquaintances took him to the field early Monday morning, about 1 a.m., ostensibly to target-practice with the pistol.

"They practiced shooting for a while and then (one of the friends) turned the gun on (Dunsmore)," said Salt Lake Police Sgt. Scott Atkinson.

Officers placed two boys, ages 15 and 16, into the Juvenile Detention Center. Julie Adair Gaeta, 30, was booked into the Salt Lake County Jail for investigation of criminal homicide, according to jail records.

Dunsmore had been living at 4306 S. Newton Court (1175 West) with Gaeta and one of the boys, said homicide squad Lt. Jim Bell.