Roger Engelby of Jefferson, Missouri, sets up an Elvis shrine outside the gates of Graceland while waiting for the candlelight vigil to begin, where mourners will gather to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

Image used for illustrative purpose. Oskar Meglic, a retired butcher, impersonator and avid collector of Elvis Presley memorabilia, poses beside Elvis statue in his garden in Vrtovce, Slovenia August 16, 2017.

Mourners gather to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

Mourners gather to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

Seven-year-old twins Luciano (L) and Dominic Nichilo of Toronto stand with their mother Jessica while attending the Collingwood Elvis Festival on the 40th anniversary year of singer Elvis Presley's death, in Collingwood, Ontario, Canada July 29, 2017. Picture taken July 29, 2017.

Douglas Masuda, a former lawyer, impersonator and avid collector of Elvis Presley memorabilia, gestures besides an Elvis Presley statue display inside his home in Makati city, metro Manila, Philippines August 14, 2017, two days before the 40th anniversary of the death of the King of Rock and Roll.

Mourners gather to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

Image for illustrative purpose. "Elvis Tribute Artist" Garry J. Foley of Poole, England is reflected in the plexiglass of a hockey arena while performing during the Collingwood Elvis Festival on the 40th anniversary year of singer Elvis Presley's death, in Collingwood, Ontario, Canada July 29, 2017. Picture taken July 29, 2017.

Thousands of mourners gather to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

Mourners stroll past the grave of Elvis Presley as they gathered to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

A car and inscription on the garage of Oskar Meglic, a retired butcher, impersonator and avid collector of Elvis Presley memorabilia are seen in Vrtovce, Slovenia August 16, 2017.

A woman rests on a barrier frame while attending the Collingwood Elvis Festival on the 40th anniversary year of singer Elvis Presley's death, in Collingwood, Ontario, Canada July 29, 2017. Picture taken July 29, 2017. REUTERS/Chris Helgren

Fans continue to leave love notes to Elvis on the wall of Graceland as mourners gather to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

Elvis Presley's daughter Lisa Marie lights the candles of some of the mourners who gathered to commemorate the 40th anniversary of the death of singer Elvis Presley at his former home of Graceland, in Memphis, Tennessee, U.S. August 15, 2017.

"Elvis Tribute Artist" Robert Frank of Newmarket, Ontario, performs on a street platform during the Collingwood Elvis Festival on the 40th anniversary year of singer Elvis Presley's death, in Collingwood, Ontario, Canada July 29, 2017. Picture taken July 29, 2017.