The Ventura County Sheriff’s Department said in a release that they began searching for a presumed drowning victim at the reservoir at around 1pm.

Actress Naya Rivera is missing and presumed dead today after her four-year-old son was found alone on a boat in California. 
The Glee star and her son Josey rented a pontoon boat on Lake Piru on Wednesday afternoon, but three hours later another boater raised the alarm after seeing the vessel drifting and the child asleep on board. 
Cops found Rivera’s life vest on the boat and believe that ‘she did go in the lake’ to go swimming, acknowledging that ‘this may well be a case of drowning’. Her car was found nearby. 
Four-year-old Josey has told investigators that his mother jumped in the water and didn’t come back up, TMZ reports, but the circumstances are unclear and cops say it is ‘challenging’ to interrogate a toddler.
The Ventura County Sheriff’s Department confirmed last night that the missing woman was 33-year-old Rivera, who starred in 113 episodes of the hit musical series from 2009 to 2015.  
Divers and helicopters were scouring the reservoir until darkness fell but no trace of Rivera has been found and the search has now been halted until morning. 
The Glee star and her son Josey rented a pontoon boat on Lake Piru on Wednesday afternoon, but three hours later another boater raised the alarm
The scene of the search after a boater raised the alarm on Wednesday afternoon, telling authorities he had seen the four-year-old asleep on a drifting pontoon boat 
Naya Rivera’s car was found near the scene where she was reported missing on Wednesday when another boater raised the alarm after seeing her son asleep on a drifting pontoon boat 
A helicopter carries out a search on Lake Piru on Wednesday, after Naya Rivera was reported missing at around 4pm 
Naya Rivera in Glee (left) with Heather Morris and Diana Agron in 2009 
Child actor and Glee star: The life of Naya Rivera 
Naya Rivera, age four, as Hillary Winston on the CBS sitcom The Royal Family
Naya Rivera was born to former model Yolanda Rivera and actor George Rivera on January 12, 1987, in Santa Clarita, California.
She began her acting career at just months old, starring as a baby in adverts for Kmart before landing a significant role as Hillary Winston on the CBS sitcom The Royal Family at the age of four.
After years spent playing guest roles and reoccurring TV parts Rivera secured her breakthrough role at the age of 22, starring as Santana Lopez on the Fox television series Glee, from 2009 to 2015. The role earned her award nominations for numerous accolades.
During this time, in 2011, she signed to Columbia Records and launched a solo singing career, releasing a single with rapper Big Sean in 2013 – who she was then dating – titled Sorry.
Rivera made her first film debut as Vera in the horror film At the Devil’s Door in 2014, then returned to TV to play the reoccurring role of Blanca on Devious Maids in 2015.
A year later she published a memoir aged 29, entitled Sorry Not Sorry: Dreams, Mistakes, and Growing Up. 
Rivera began dating artist Big Sean in April 2013, becoming engaged in October 2013 but ending the relationship six months later.  
She then began dating actor Ryan Dorsey, who she had previously dated in her early 20s. The pair married on July 19, 2014 in Cabo, San Lucas, Mexico – the same date initially set for her marriage to Big Sean.  
Seven months later the married couple announced they were expecting a son, Josey Hollis, who was born in September 2015.
In November 2016 the couple filed for divorce, they then briefly reunited until November 2017 when Rivera was arrested and charged in Kanawha County, West Virginia with misdemeanor domestic battery against Dorsey. They finally divorced in 2018. 
Demi Lovato was among the celebrities to hold out hope last night, asking her 87million Instagram followers to ‘pray for Naya Rivera to be found safe and sound’. 
Rivera’s former Glee co-star Heather Morris said: ‘We need all the prayers we can get to bring our Naya back to us… we need your love and light.’ 
Officials told NBC Los Angeles that Rivera’s disappearance was ‘considered to be a horrible accident’, saying there was no suspicion of foul play.   
Authorities believe Rivera to be ‘presumed drowned’, according to Captain Eric Buschow, a spokesman for the Ventura County Sheriff’s Office. Reports say her car was found nearby with her purse still inside. 
A search and rescue dive team and a helicopter with a drone were both dispatched to the lake, around 60 miles north-west of downtown Los Angeles. The search was suspended overnight but is due to continue ‘at first light’.  
Sheriff’s office spokesman Buschow told reporters last night that Rivera and her son were seen going out on the lake at around 1pm. 
‘Approximately three hours after they left the dock another boater out on the lake discovered the boat drifting with the [son] on board asleep,’ they said. 
‘So they contacted the rangers and began an investigation and we’ve been actively searching for the mother since that time. We have both aerial search going on and our dive team as well.
‘Indications are that we believe she did go in the lake. At this point it’s still a search and that’s what we know up to this point.
‘The [son] said that he had been swimming with his mother and that she got back in the boat and her mum didn’t. ‘We know that the [boy] had a life vest on, there was another adult life vest found on the boat. It’s somewhat challenging interviewing a three-year-old.
‘We’re going on the belief that she did go in the water, and we’ve not been able to locate her. This may well be a case of drowning.’
Buschow said it was not known how deep the water was at the spot where Rivera went into the water or what kind of conditions they might have been facing.  
‘This is a big reservoir, it’s deep, these kinds of things happen. We don’t know all the circumstances. Investigators are working on that, getting as much information as possible,’ he said. 
The sheriff’s office initially referred mistakenly to a three-year-old girl, but later clarified that the child is a four-year-old son.  
Investigators have made contact with Rivera’s family and said they were working to ‘reunite’ the toddler with relatives.  
 Lake Piru is a reservoir located in the Los Padres National Forest and Topatopa Mountains
Helicopters were deployed to Lake Piru in Ventura County to search until darkness fell. The operation was subsequently paused until first light on Thursday 
Authorities believe Rivera to be ‘presumed drowned’ and a search has been launched to locate her body
The pair had been out on a rented pontoon boat when they decided to go for a swim. The boy told authorities his mother didn’t come back onto the boat after they were done swimming
A search and rescue dive team and a helicopter with a drone have both been dispatched to the scene to assist in the search
Rivera had last posted on social media on July 7, sharing a touching photo of her with her so Josey. ‘Just the two of us,’ she wrote as a caption. 
The actress starred in Glee from 2009 to 2015, playing high school cheerleader Santana Lopez for all six seasons of the popular series. 
Naya welcomed son, Josey Hollis, with then-husband Ryan Dorsey in 2015. 
She called her young son ‘my greatest success, and I will never do any better than him’ in her 2016 memoir ‘Sorry Not Sorry.’ 
Rivera and Hollis divorced in 2018, after Rivera had earlier applied to end the marriage in 2016 but the couple had initially reconciled. 
On Thanksgiving weekend 2017, Rivera was arrested in West Virginia on suspicion of domestic battery against Dorsey.  The Kanawha County Sheriff’s Office said Dorsey later asked that Rivera not be prosecuted.  
Former Glee co-star Matthew Morrison defended Rivera at the time, saying she was a ‘great mom’. 
Before that, Rivera was engaged to rapper Big Sean but they broke off their marriage plans in 2014. Big Sean featured on Rivera’s debut single ‘Sorry’, which was released in September 2013. 
Rivera also dated co-star Mark Salling, who killed himself inf 2018 after pleading guilty to child pornography charges. 
The Glee cast had already been hit by tragedy in 2013, when Cory Monteith was found dead in a Canadian hotel room. A coroners report blamed the 31-year-olds death on a fatal dose of heroin and alcohol.
Lake Piru is a reservoir located in the Los Padres National Forest and Topatopa Mountains, created in 1955.
Police vehicles at the scene of the search, which continued until darkness fell on Wednesday
A body had not been located as of last night and the search was suspended until first light on Thursday