A 13-year-old Kingman boy has died in a dirt bike collision.
Joshua Graffius and his 15-year-old brother were riding dirt bikes with a group of friends Sunday. Police say the elder sibling jumped his bike off a dirt berm and landed on his younger brother, who had driven in his path.
Graffius was taken to the Kingman Regional Medical Center where he died. The 15-year-old boy broke his leg.
Police spokesman Capt. Rusty Cooper said Monday that the brothers were wearing helmets and other protective gear. He says authorities are not considering criminal charges.
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