Glee actress and singer Naya Rivera is feared dead after her four-year-old son was found on a boat on a lake in California.
Officers said Rivera, 33, had gone swimming with her son, who got back into the vessel, but she did not.
Rivera was not wearing a life jacket, but the child was, police say.
On Tuesday, Rivera tweeted a photo of her with her son, captioning it: "Just the two of us"
The Ventura County Sheriff's Department (VCSD) said it responded to a report of a toddler alone on a rented boat on Lake Piru yesterday.
Officers found the child, but no information was immediately released about his condition.
A dive team and air unit were deployed in response, the VCSD said.