The actress' 4-year-old son was found alone in a boat on the water.
Actress Naya Rivera is missing after taking a boat ride with her 4-year-old son, Josey, in Lake Piru in the Los Padres National Forest in Ventura County, California, on Wednesday, the Ventura County Sheriff's Department has confirmed.
The Sheriff's Department told NBCLA that the mother and son rented a boat at around 1 p.m.
Approximately three hours later, another boater discovered Josey in the boat by himself. He told authorities that his mother went into the water for a swim, but never came back up or returned to the boat, TMZ reports.
Officials told NBCLA that Rivera's son was wearing a life vest while his mom was not.
A search was immediately initiated with the use of helicopters, divers, and drones. The 33-year-old Glee star has not yet been found. Authorities reportedly believe Rivera to be dead.
The Sheriff's Department announced that the search for Rivera was suspended well into the evening, and that search and rescue effort would continue "at first light" on Thursday.
Shortly after news of Rivera's disappearance broke, her former Glee co-star, Harry Shum Jr., tweeted, "Praying."
On Thursday, authorities posted on Twitter that they were again out looking for the actress. "The search for Naya Rivera will continue this morning at Lake Piru. The lake will be closed to the public while search operations continue. Dive teams from throughout the region will be assisting us through mutual aid."
Later that day, CBS News reported that officials were now calling it "a search and recovery effort."