Yolo, Sutter sheriff's offices searching for man missing on Sacramento River Yolo County Sheriff's Office said that the man was last seen trying to help a young swimmer "that was in distress." Author: Izzy Greenblatt Updated: 3:30 PM PDT July 29, 2021 KNIGHTS LANDING, Calif. — The Yolo County Sheriff's Office marine patrol unit is helping search for a man who went missing in the Sacramento River on Wednesday. The Yolo County Sheriff's Office said on Facebook that they are helping the Sutter County Sheriff's Office with a search and rescue mission near Knights Landing of 18-year-old Ahmir Watson. The sheriff's dispatch center got a call about Watson around 3:30 p.m. on July 28. The caller said that Watson was swimming in the Sacramento River near 3rd Beach on the Sutter County side of the river. He was trying to "rescue a juvenile swimmer that was in distress," according to the Yolo County Sheriff's Office.