A body recovered from a lake in California is that of missing "Glee" actress Naya Rivera, officials said on Monday.

"We are confident the body we found is that of Naya Rivera," Ventura County Sheriff Bill Ayub told a news conference on the shore of Lake Piru near Los Angeles.

Rivera, 33, was presumed drowned after going missing on Wednesday. She had rented a boat on Lake Piru with her four-year-old son, Josey, who was found unharmed.