RedactedNarrative: On 4/22/2017 at 1457 hrs, Vessel #1, a 1996 Bombardier SeaDoo personal watercraft (PWC), collided with Vessel #2, a 1998 Champion bass boat, southwest of Fishing Dock #2, on Saguaro Lake, in the Tonto National Forest, AZ. Operator of Vessel #1 was ejected from the watercraft, went under water, and did not surface.
  
  Subject and I were sitting in the Saguaro Lake Aid Station office, with windows overlooking Saguaro Lake. Subject1 advised me a PWC, Vessel #1, and a boat, Vessel #2, had collided. Using a spotting scope, I saw Vessel #1 was unoccupied, not moving in the water. Vessel #2 was slowly moving next to Vessel #1. Another PWC, occupied by a male subject later was next to Vessel #1. I did not see anyone in the water.
  
  Subject1 and I boarded a patrol boat and went to the scene. I was advised by Subject2 that the operator of Vessel #1, Operator1, had gone under water after the collision and had not resurfaced. Subject2 said he had been traveling alongside Operator1 and looked away. Subject2 turned back to look at Operator1 and saw Vessel #1 and Vessel #2 collide. I asked Subject2 if Operator1 had been drinking and he said he had not been.
  
  I directed the operator of Vessel #2 to proceed to the emergency slips alongside the Sheriff''s Office Boat House and to dock his boat, which he did. I had Subject2 also proceed to the emergency slips and dock the PWC he was on.
  
  I advised MCSO Radio of the GPS coordinates of the crash. Vessel #1 began taking on water and I towed it to the Sheriff''s Office Boat House. Vessel #1 was moved into the boat house and lifted out of the water on the boat lift. Vessel #1 sustained damage to the steering handle grips, mid-port side hull area, and under the seat on the port side. 
  
  I returned to the location of the crash and began using side scan sonar in attempt to locate Operator1. Additional Deputies responded and launched a second patrol and also began looking for Operator1. This initial search was unsuccessful.
  
  My Body Worn Camera was activated for this incident.
  
  Nothing Further.
  