Pink Taco founder Harry Morton's cause of death revealed

Restaurateur Harry Morton died of natural causes, according to the Los Angeles County Coroner’s Office.

The 38-year-old founder of Pink Taco restaurants and former owner of the Viper Room on L.A.’s Sunset Strip, known for having romanced Lindsay Lohan briefly in 2006, was found unresponsive by his younger brother in his Beverly Hills, Calif., home days before Thanksgiving.

Harry Morton died on Nov. 23 at 38. (Photo: John Shearer/WireImage) WireImage

On Wednesday, officials listed his cause of death as “probable cardiac arrhythmia,” or an irregular heartbeat. He also had “myocardial bridging with coronary artery artherosclerosis.”

Morton’s family told TMZ, two days after his death, that they were told he had suffered a heart attack caused by blockages in multiple arteries. They said a second doctor said Morton had “calcification in 3 of his main arteries.”

The autopsy report, obtained by Yahoo Entertainment, says Morton had no drugs or alcohol in his system at the time of his death.

Morton was the son of Peter Morton, who co-founded the popular chain of Hard Rock Cafe restaurants, which became real celebrity hot spots in some cities. Peter Morton’s father and Harry’s grandfather, Arnie Morton, founded the upscale eatery Morton’s Steakhouse.

Harry Morton’s memorial service was attended by celebrities including Demi Moore, another of his exes, as well as Lori Loughlin and her husband Mossimo Giannulli, who are currently awaiting sentencing in the college admissions scandal, as well as actor Stephen Dorff.

22 PHOTOS
Harry Morton through the years
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Harry Morton through the years
BEVERLY HILLS, CA - APRIL 17: Harry Morton at the "Saks Fifth Avenue And Angeleno Magazine Present The 2012 Men Of Style" event at Saks Fifth Avenue Beverly Hills on April 17, 2012 in Beverly Hills, California. (Photo by John Shearer/WireImage)
(L-R) Ali Fatourechi, Harry Morton, and Darren Dzienciol (2nd L) attend the kick off of The Beverly's grand opening weekend at The Beverly on May 19, 2011 in West Hollywood, California. (Photo by Charley Gallay/WireImage)
Randall Slavin and Harry Morton at "Step-and-Repeat" Presented By Elijah Blue and Kantor Gallery on February 24th, 2010 in Los Angeles, CA.
LOS ANGELES, CA - JANUARY 15: Actor Harry Morton (L) and Nicole Ruvo attend the Golden Globes party hosted by T Magazine and Dom Perignon at Chateau Marmont on January 15, 2010 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images for Dom Perignon)
Harry Morton attends DASHA ZHUKOVA & POP MAGAZINE HOST MOCA'S 30th ANNIVERSARY AFTER PARTY at 8746 Sunset Boulevard on November 14, 2009 in West Hollywood, CA. (Photo by - ANDREAS BRANCH/ PMC)
HOLLYWOOD - NOVEMBER 11: Michael Muller (L) and Harry Morton (R) attend IWC Schaffhausen Celebrate Michael Muller And The Charles Darwin Foundation at Milk Studios on November 11, 2009 in Hollywood, California. (Photo by Jordan Strauss/Getty Images for IWC Schaffhausen)
LOS ANGELES, CA - AUGUST 31: Harry Morton and Hayden Panettiere hikes Runyon Canyon on August 31, 2009 in Los Angeles, California. (Photo by Derek Steele/BuzzFoto/FilmMagic)
LOS ANGELES, CA - MAY 05: Harry Morton attends the Deleon Tequila launch party at Chateau Marmont's Bar Marmont on May 5, 2009 in Hollywood, California. (Photo by John Shearer/WireImage)
NEW YORK CITY, NY - OCTOBER 18: Guest and Harry Morton attend LARA SHRIFTMAN and ANDY HEWITT Preview Dinner at LUAU on October 18, 2008 in New York City. (Photo by PATRICK MCMULLAN/Patrick McMullan via Getty Images)
- AUGUST 11: Kevin Turen and Harry Morton attend French Connection and The Art of Elysium Present Nino Munoz "Playa Y Sol" at Malibu on August 11, 2007. (Photo by Brian Lindensmith/Patrick McMullan via Getty Images)
MALIBU, CA - JULY 3: Harry Morton (l) and an unidentified guest attend the "French Connection Beach House" at a private residence on July 3, 2007 in Malibu, California. (Photo by Chris Weeks/WireImage)
CENTURY CITY, CA - JUNE 28: Harry Morton attends Harry Morton's Pink Taco Restaurant Celebrates the Opening of New Los Angeles Outpost at Pink Taco on June 28, 2007 in Century City, CA. (Photo by ANDREAS BRANCH/Patrick McMullan via Getty Images)
Harry Morton during Genetic Denim's One-Year Anniversary and the Launch of Their Re-Vamped Collection - Red Carpet at Area in Los Angeles, California, United States. (Photo by John Shearer/WireImage for Alison Brod PR)
Harry Morton and Lindsay Lohan during The 63rd International Venice Film Festival - "Bobby" Premiere - Red Carpet and Inside at Palazzo del Casino in Venice Lido, Italy. (Photo by Daniele Venturelli/WireImage)
Harry Morton and Lindsay Lohan during The 63rd International Venice Film Festival - "Bobby" Premiere - Red Carpet and Inside at Palazzo del Casino in Venice Lido, Italy. (Photo by Daniele Venturelli/WireImage)
Lindsay Lohan and Harry Morton during The 63rd International Venice Film Festival - Celebrities Leaving the Cipriani Hotel - September 5, 2006 at Cipriani Hotel in Venice, Italy. (Photo by Niki Nikolova/FilmMagic)
Harry Morton and Lindsay Lohan during The 63rd International Venice Film Festival - "Bobby" Premiere - Red Carpet and Inside at Palazzo del Casino in Venice Lido, Italy. (Photo by George Pimentel/WireImage)
Harry Morton during Genetic Denim Launch Party Sponsored by Svedka - Arrivals at LAX in Los Angeles, California, United States. (Photo by John Shearer/WireImage)
NEW YORK CITY, NY - NOVEMBER 9: Harry Morton attends 10th VICTORIA'S SECRET FASHION SHOW - Inside Arrivals and Frontrow at Lexington Avenue Armory on November 9, 2005 in New York City. (Photo by Billy Farrell/Patrick McMullan via Getty Images)
Paris Hilton and Harry Morton during Anniversary Weekend of Body English at Hard Rock Hotel & Casino - Party at Body English - Night 1 at Hard Rock Hotel & Casino in Las Vegas, Nevada, United States. (Photo by Jamie McCarthy/WireImage for PMK/HBH)
Jeff Beacher , Tommy Lipnik and Harry Morton during Grand Opening of TAO Las Vegas at Venetian Resort, Hotel and Casino in Las Vegas, Nevada, United States. (Photo by Jamie McCarthy/WireImage)
Harry Morton at the Chateau Marmont in West Hollywood, California (Photo by Donato Sardella/WireImage)
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