'Glee' star Naya Rivera is feared to have drowned after a boating trip at a lake in southern California.
According to reports, the 33-year-old had rented a boat on Wednesday afternoon at Lake Piru along with her son.
The four-year-old was found alone on the boat wearing a lifejacket, three hours later.
He reportedly told investigators that his mother was swimming and did not get back on the boat.
A search operation is currently underway.