A 22-year-old man went missing while tubing on the Salt River on Sunday, the Maricopa County Sheriff's Office said in a press release.
Joshua Williams was last seen between Sheep Bridge and Mud Cliffs when he floated away from his friends.
Williams is described as being a black male, standing 6-foot-3 and weighing about 200 pounds. He was last seen wearing a white t-shirt, black jean shorts and black tennis shoes.
Anyone with information on Williams' whereabouts is asked to contact MCSO.