(KRON) -- Search crews were unable to find a missing man in the Russian River on Wednesday, according to Steve Baxman of the Monte Rio Fire Protection District. Crews responded to the Villa Grande Beach for the report of a possible drowning in the river at about 6:20 p.m. The beach is about a mile south of the census-designated place of Monte Rio. Baby falls out of window in SF’s Mission District: authorities MRFPD crews deployed a jet ski and three divers to search for the missing person, who witnesses said was a 27-year-old man. Civilian divers and the Sonoma County Sheriff's Office assisted with the search. Crews also used a boat with sonar technology to scan the river floor, Baxman said, but they had no luck. Search efforts will resume on Thursday morning. In April, a teenager drowned in the river after he and a friend were swept into it at Steelhead Beach in Forestville.