University Hospital officials say they can't confirm an attorney's statement that an 11-year-old bombing victim is brain dead.

In a hallway outside a federal courtroom, defense attorney Robert Van Sciver said Adam Cook's brain waves "are flat. It's all very sad."But hospital spokesman John Dwan said, "All I can say is, lawyers don't treat patients. As far as the University Hospital is concerned, he has not been confirmed brain dead. He is still in critical and unstable condition."

Cook was injured shortly after he climbed into a Toyota Landcruiser owned by his father, Howard Cook, last Wednesday night. Steven Douglas Thurman, 32, is accused of detonating a powerful pipe bomb loaded with nails that was attached to the vehicle.

An AA-size battery was blown into the boy's brain by the force of the blast, according to a complaint filed in federal court.

The U.S. attorney for Utah has charged Thurman with one count of possessing an unregistered explosive. But capital homicide charges may be pending, police said.

Murray detectives have reviewed evidence with the Salt Lake County attorney's office, and if Adam Cook dies, capital homicide charges are possible, said Murray Police Detective Jeff Anderson.

U.S. Magistrate Ronald Boyce on Monday denied bail to Thurman, citing the suspect's threat to the community and to himself.

The bomb went off in front of a Murray home where Howard Cook was waiting for his son to return from a Boy Scout meeting. Adam Cook went to the truck first and apparently honked the horn. Seconds later, the Landcruiser exploded.