KINGMAN, Ariz. (AP) - Authorities say two Kingman men have been seriously injured in a crash involving four motorcycles.
Kingman police say one of the men suffered life-threatening head and internal injuries while another man also remains hospitalized in serious condition with internal injuries that aren't life-threatening.
They say four motorcyclists were traveling as a group Saturday morning in Kingman when a 43-year-old man made a lane change and struck a 59-year-old rider.
A 52-year-old man driving a third motorcycle in the group struck the non-helmeted first rider, causing him to lose control and crash.
The 29-year-old fourth cyclist also went down while trying to avoid the other crashes.
The fourth motorcyclist also wasn't wearing a helmet but suffered only lacerations and didn't need hospital treatment.
Police say alcohol or other impairment isn't suspected.
No names have been released in this case.