Matthew Perry Was 'Very Nice' at Diner Where He Was Spotted with Friend Days Before His Death: Source

The late 'Friends' actor, who died unexpectedly on Saturday, stepped out with a pal at The Apple Pan in Los Angeles on Oct. 21

Just one week before his sudden death, Matthew Perry enjoyed an outing with a friend at a popular Los Angeles diner.

The 54-year-old actor — who died Saturday in an apparent drowning — was photographed in public for the last time on Oct. 21 at The Apple Pan, which he left with a beverage in hand. Perry wore dark pants and a gray T-shirt, while his dining companion carried a takeout bag.

“He was a good guy, very nice,” a restaurant source tells PEOPLE of a previous visit the Friends star made to The Apple Pan, which is popular among celebrities like Leonardo DiCaprio.

Adds the source of Perry’s low-key demeanor: “It was a busy day, but people weren’t really looking at him.”

Related: Matthew Perry's Friends and Costars React to His Death: 'Shock and Sadness Prevail'

Following news of his death, the star’s family mourned his loss in a statement shared exclusively with PEOPLE.

"We are heartbroken by the tragic loss of our beloved son and brother," the family said. "Matthew brought so much joy to the world, both as an actor and a friend. You all meant so much to him and we appreciate the tremendous outpouring of love."

Related: Matthew Perry's Parents: All About His Dad John, Mom Suzanne and Stepdad Keith Morrison

Perry was found dead at his Los Angeles-area home, with TMZ reporting that first responders had been called to the home for cardiac arrest but that no drugs were found at the scene and no foul play was suspected.

A Los Angeles Police Department spokesperson later told PEOPLE that officers responded to a call at Perry’s address regarding the death of a male in his 50s, though authorities would not confirm the identity of the deceased.

Related: Matthew Perry Fans Honor Late Actor with Tributes at Chandler Bing's Friends Apartment in N.Y.C.

“We are devastated by the passing of our dear friend Matthew Perry,” Warner Bros. TV, which produced Friends, said in a statement.

“Matthew was an incredibly gifted actor and an indelible part of the Warner Bros. Television Group family. The impact of his comedic genius was felt around the world, and his legacy will live on in the hearts of so many," the statement continued. "This is a heartbreaking day, and we send our love to his family, his loved ones, and all of his devoted fans."

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Perry shared a final post to Instagram on Monday that featured him in a hot tub at night with the caption, “Oh, so warm water swirling around makes you feel good? I’m Mattman.”

"Mattman" is a name he'd used in recent days while posting on social media, often including references and imagery related to Batman.

“He was having fun,” a source told PEOPLE of his “Mattman” posts, which stemmed from an idea Perry had been working on for a series.

The insider said Perry had also just signed on to act in a new drama film, Unworthy, which was on hold due to the strike, and had recently moved into his new home after renovating it.

“He was incredibly happy,” the source added.

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