CALABASAS, Calif. — Elvis Presley's grandson Benjamin Keough has died, a representative for his mother, Lisa Marie Presley, said. He was 27.

Keough died in Calabasas, Calif., Roger Widynowski told CNN Sunday.

The representative said he did not have further details on the circumstances of Keough's death, including the date.

TMZ reported that Keough died from a self-inflicted gunshot wound Sunday.

Benjamin Keough

Benjamin Keough, Elvis Presley's grandson, died in Calabasas, Calif., a representative for his mother, Lisa Marie Presley, said.

Presley is "entirely heartbroken, inconsolable and beyond devastated," Widynowski said in a statement, "but trying to stay strong for her 11-year-old twins and her oldest daughter Riley."

"She adored that boy. He was the love of her life," Widynowski said.

Keough's father was the musician Danny Keough.

Benjamin Keough

In this Jan. 8, 2010, file photo, Priscilla Presley, second from left, her daughter, Lisa Marie Presley, second from right, and Lisa Marie's children, Riley Keough, left, and Benjamin Keough, right, take part in a ceremony in Memphis, Tenn., commemorating what would have been Elvis Presley's 75th birthday.

Keough had a striking resemblance to his singer/actor grandfather. Priscilla Presley was his maternal grandmother.

Nancy Sinatra tweeted her condolences to Presley, writing, “I have known you since before your mama gave birth to you, never dreaming you would have pain like this in your life. I’m so very sorry.”

Photos: Notable Deaths in 2020

Here's a look at celebrities, leaders and other notable people who have died so far in 2020.

The-CNN-Wire

™ & © 2020 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

The Associated Press contributed to this report.

Load comments