Washington ? Debris flew into the grandstands at a monster truck show in Washington state, killing a 6-year-old boy and injuring another spectator, witnesses and city officials said Saturday.

A red truck came apart while doing doughnuts during the freestyle competition of Friday night’s Monster Jam show, the witnesses said. Debris from the truck flew 30 to 50 feet over a safety barrier into the stands.

“Parts were falling off and a piece flew up and hit a little boy,” Christine Moe told King Television of Seattle.

The Pierce County medical examiner’s office identified the boy killed as Sebastian Hizey of Puyallup.

The boy’s father, Jessie Hizey, issued a statement to KIRO-TV on Saturday that said his son was hit in the head by a Frisbee-sized piece of metal, weighing between 7 and 12 pounds.

“I cannot get the images” out of my head, the father said.

Some spectators told the TV station they had to throw cups off the stands to get the attention of medics. The show continued after the two were hurt, and many spectators left.

“They just kept going,” Moe said. “We grabbed our kids and just bee-lined out of there.”