SONOMA (CBS SF) — A 14-year-old boy is missing in Sonoma County after he fell from an inner tube on Lake Sonoma Saturday afternoon, according to the Sonoma County Sheriff’s Office.

Deputies responded at about 3:50 p.m. to a report that the boy fell from the inner tube as it was being pulled by a personal watercraft, sheriff’s officials said.

READ MORE: Homeless Man Killed After Being Set On Fire In San Francisco's Mission District Identified

The boy was one of two boys on inner tubes being towed behind the watercraft, according to the sheriff’s office. One was able to swim to safety.

The juveniles were being pulled through an area of deep water when they fell, according to the Marin County Sheriff’s Office, which was helping in the search.

READ MORE: COVID: Masking Rules for Certain Indoor Locations Relaxed in San Francisco, Marin County

Sheriff’s officials said witnesses told them neither boy was wearing a life jacket.

Dive teams will be searching the lake tonight until it becomes unsafe to search, according to the sheriff’s office. If the boy is not found, dive teams will continue the search in the morning.

The U.S. Army Corp of Engineers and Lakeville firefighters have been assisting in the search, according to the sheriff’s office.

MORE NEWS: FDA Advisers Back COVID-19 Booster Shots for Johnson & Johnson Recipients

Deputies are not releasing the name of the missing boy at this time.

© Copyright 2015 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.