WINONA (AP) - Winona County sheriff's officials are once again using special sonar equipment from Carver County in their search for a fourth person who is presumed drowned after an SUV plunged into the Mississippi River.

Sheriff Dave Brand said Wednesday search crews are also using a remote underwater camera operated by a Black River Falls, Wis., business in their efforts to find a 29-year-old La Crosse, Wis., man identified as Andrew Kingsbury.

About 100 people attended a prayer service near the search area in Winona Tuesday afternoon. The body of 28-year-old Blake Overland, of Stewartville, was recovered Monday. The bodies of the driver, 36-year-old Christina Lee Hauser, and one passenger, 30-year-old Mathew Erickson, were found inside the vehicle when it was pulled from the water Sunday.