Matthew Morrison looks downcast amid fears Glee castmate Naya Rivera is dead after four days missing

Naya Rivera’s Glee castmate Matthew Morrison looked somber while spotted out on Saturday.

The actor, 41, kept his head down during a trip to Home Depot and though his face was covered with a mask, it was clear his emotions were weighing heavy.

Morrison’s outing comes amid fears that Rivera is dead after disappearing while out boating at Lake Piru in Ventura with her 4-year-old son Josey on Wednesday and is now presumed dead.

Morrison and Rivera starred on the musical hit Glee from 2009 to 2015, both core members of the cast.

The search for the Glee star, 33, entered its fourth day Saturday following her Wednesday disappearance.

Son Josey was found alone in a rental boat that evening with no sign of his mother, who is now presumed dead.

Ventura County Sheriff’s Department shared footage of the ‘difficult’ search for the missing actress on Twitter Friday night, which has been hampered by the poor visibility of the lake’s murky waters. 

The video shows the imagery picked up around 30 foot deep in the water.

In it, authorities point to a tree limb which looks like nothing more than a long dark shape given the water’s poor visibility, highlighting the challenges divers are facing in trying to find the missing mother-of-one.  

‘Here’s an example of the underwater visibility at a 30-foot depth in Lake Piru,’ the Sheriff’s Department tweeted.  

A second social media post shows footage of the a remotely operated underwater vehicle (ROV) being lowered into Lake Piru and details that specialized equipment including sonar, divers and dogs have also been deployed in the hunt.

‘Here’s the ROV used by @TulareSheriff in the search for Naya Rivera at Lake Piru today,’ the Sheriff’s Department wrote.     

With almost zero visibility, human divers are resorting to search by feel, meaning it could take several days before crews can locate her body, Eric Buschow, Ventura County Sheriff’s Office spokesman said at a press conference Friday evening.

‘We don’t know if she’s going to be found five minutes from now or five days from now, so we’re still going to be continuing this effort,’ he said.

‘The visibility in the water is one to two feet,’ Buschow added. 

Buschow said ‘promising’ images had shown up on the sonar Thursday night but when the ROV was dropped into the water the objects turned out not to be Rivera.  

‘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.

‘Last night, they had a couple of images that showed up on the sonar that they thought might be promising to investigate,’ he said. 

‘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 admitted the conditions of the lake made the search ‘difficult’ but said he is confident Rivera’s body will be recovered. 

‘It’s very effective,’ he said of the sonar system. 

‘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.’ 

The search resumed at 6 a.m. Saturday morning, with authorities now focusing on the north and east sides of the lake, based on where the boat was found and the currents of the water. 

A specially-trained dog is also being used in the search to sniff above the water’s surface and alert handlers to a body beneath. 

Authorities confirmed the mission had shifted to a recovery Thursday as hope of finding Rivera alive vanished.  

The actress’s distraught family said they just ‘wish’ she could be found so they could get some ‘closure’ over what is believed to have been a tragic drowning accident. 

A man thought to be 65-year-old Arnold Dorsey, the father of Rivera’s ex-husband Ryan Dorsey and the grandfather to Josey, told The Sun the whole family was ‘sad’ and were rallying around Rivera’s son.  

‘We are sad, we just wish they could find her so we can have some closure,’ he said outside Rivera’s mother Yolanda’s home in Valencia.

He said Josey was having some ‘good days’ after the four-year-old’s terrifying ordeal.    

‘We still have good days [with him], I can’t make any other comment at this time.’  

Josey was found asleep and alone on the rental boat Wednesday evening. 

He told police his mother had ‘jumped’ into the water to go swimming and never came back, but police admitted it was ‘challenging’ to interview a four-year-old.  

The lake was said to be a ‘sanctuary’ for Rivera and somewhere she had been going to for years. 

However, the waters are also known for their rip currents and for being full of debris, and eight people have drowned there since 1994. 

Authorities have said there is no evidence of foul play or suicide and that everything points to the young star accidentally drowning.