Police are confident the body found at Lake Piru in California is that of missing Glee actor Naya Rivera.
At a press conference held at the lake on Monday (local time), the Ventura County Sheriff said the location and physical characteristics of the body matched Rivera's and that her family had been notified.
The 33-year-old actress, best known for her work on Glee, went missing in the lake on Wednesday (last week) after going for a boat ride. Her four-year-old son Josey was later found alone on the boat unharmed.
During the press conference, it was revealed that Rivera's son told authorities his mother helped him into the boat after swimming before he turned back to see her disappear under the water.
The child was wearing a life jacket, while an adult life jacket was discovered still onboard.
Authorities have spent the last five days searching for Rivera using sonars, dogs and divers.
It's not believed that foul play is involved.
"We interviewed her son and there was nothing that we learned from her son that would have suggested that this was suicide," Sgt Kevin Donoghue told People.
"Everything that we've learned so far leads to this being some sort of water recreational accident.
"To say definitively what actually happened, we really can't say. We just don't know, it's a mystery. We're still investigating, we're still searching. We're trying to uncover clues as we go. But so far, we really don't have a lot of information to make any guesses as to what could have happened."
As well as searching the murky lake, officials have been checking cabins and outbuildings as well as the shoreline.
Authorities had to ask members of the public to not conduct their own searches for Rivera.
"For those intent on searching for Naya Rivera on your own, 1. The lake is closed. 2. Temps are already in the 90s. 3. The terrain around the lake is very steep and rugged. Our teams are well equipped and highly trained. We don't want to have to rescue you," the Ventura Sheriff said on.