Culver City Police Sgt. Dan Sukal says the theft at The Culver Studios was reported Thursday.
On its website, the band offered a “no questions asked” $7,500 reward for information leading to the return of the instruments.
The stolen guitars include Petty’s blond 1967 12-string Rickenbacker and his Gibson SGTVJunior, Mike Campbell’s blue Dusenberg, Ron Blair’s Fender Broadcaster and Scott Thurston’s 1967 Epiphone Sheridan.
The band is known for a string of hit singles such as “American Girl”, “Don’t Do Me Like That,” and “Breakdown.” Their tour kicks off on April 18 in Broomfield, Colo.
The Culver Studios is a sprawling complex of 16 soundstages west of downtown Los Angeles.