Underwater footage has been released of the lake where Glee star Naya Rivera went missing.
The 33-year-old disappeared on July 8 at Lake Piru, California, while renting a boat with her four-year-old son.
The Ventura County Sherriff's Department has now released underwater footage of Lake Piru showing the poor levels of visibility.
Capt. Eric Buschow explained in a press conference on Friday that the department has brought in "specialized equipment," including a sonar system, in a bid to locate the actress's body.
Watch the footage of the lake below:"What they do is they go out and they tow these devices in the water that scan the bottom of the lake for any objects that might look like a body," Buschow said, per Fox News.
"Last night, they had a couple of images that showed up on the sonar that they thought might be promising to investigate. This morning, they sent an ROV, or a small robotic device, down into the water to examine those objects. Unfortunately, they did not locate Naya Rivera. They are still searching."
Buschow said the murky water conditions are "difficult", but the authorities are utilizing all the equipment they can to assist with the search.
"The visibility in the water is one to two feet," Buschow said, explaining that they were searching areas up to 35 feet deep.
Rivera's last Instagram post was a picture of her and her son, Josey, captioned: "It's just the two of us."
"We're still continuing the search and we appreciate everybody's cooperation," he said. "We know everyone's concerned out there about this case and locating her and providing some closure for her family."
Buschow said that he is confident that the 33-year-old's body will be located.
"It's very effective," the captain said of the sonar system being used in the search. "They get a really detailed image and they can go down and focus on specific things rather than putting divers in the water where they're literally feeling around because they can't see."
Her son was found unharmed on the rental boat after the pair failed to return.
"We don't know if she's gonna be found five minutes from now or five days from now so we're still going to be continuing this effort," Buschow said.
