9 injured during firework blast in Garden Grove By KJ Hiramoto Police released a cell phone video that showed a large fireworks explosion in Garden Grove. GARDEN GROVE, Calif. - A large firework explosion left several children hurt during a Fourth of July celebration in Garden Grove. The Garden Grove Police Department responded to a call in the 13800 block of Rosita Place. Upon arrival, emergency crews took an 8-year-old boy to the hospital after he suffered an injury and suffered burns to various parts of his body. Five other children were treated by medics at the scene for minor injuries, police say.