The body, which has not been identified, was discovered Monday morning in Lake Piru.
“Recovery is in progress,” VCSO tweeted.
A press conference is scheduled for 5 pm ET.
Rivera’s son was later seen on the boat, but his mother was nowhere to be found. A life jacket was found in the boat and the boy was wearing another. Investigators found Rivera’s bag and identification, but no other clues in the boat.
The dock video shows Rivera and her son as the only two people to board the ship, Ventura County Sheriff’s Sgt. Kevin Donoghue said at a press conference last week.
Detectives have spoken to Rivera’s son and, as a result of that conversation, they do not believe Rivera has reached shore, he said.
Rivera played Santana López on the Fox show “Glee” for six years between 2009 and 2015, and appeared in almost every episode of the musical-comedy-drama. She was also in the CBS comedy “The Royal Family” and in the comedy film “The Master of Disguise”.