Freddie Mercury's burial plaque, believed to have been placed at the Queen singer's grave by ex-girlfriend Mary Austin, has gone missing from Kensal Green cemetery.
A fan told the Daily Mirror: "It's just disappeared into complete thin air. No sooner had the mystery of Freddie's ashes seemingly been solved than this adds a whole new chapter.
"It's all very odd but just adds to the intrigue of where they ended up."
The whereabouts of Freddie's remains, who died from complications caused by AIDS in 1991 aged 45, had remained a mystery until last month when a plaque reading "In Loving Memory of Farrokh Bulsara" - the Zanzibar-born star's real name - and signed "M" was uncovered at the west London cemetery.
The message continues: "5 Sept. 1946 - 24 Nov. 1991. Pour Etre Toujours Pres De Toi Avec Tout Mon Amour."
The French words translate to: "Always to be close to you with all my love."
Austin had vowed to never reveal the ashes' location after the singer was cremated at Kensal Green.
She explained: "I made a promise on his death bed that I would never reveal where his ashes were. I do know where they are but that's all I have to say on it."
Workers at the cemetery had no idea the plaque was in honour of the Bohemian Rhapsody singer and it's not known how long it had been there before its disappearance.