Two tour buses belonging to Styx and Foreigner went up in flames Wednesday afternoon in a parking lot in Philadelphia, TMZ has reported.

The buses were unoccupied at the time and no injuries resulted.

At this time, fire officials have no explanation for the cause.

The fire was reported at 12:24 pm and was under control by the fire department within 20 minutes.

Styx and Foreigner are currently on tour with special guest Don Felder, formerly of The Eagles, for the Soundtrack of Summer Tour. They are scheduled to play the Susquehanna Bank Center Thursday night in Camden, NJ.

LISTEN: Don Felder Talks Eagles, Sarah McLachlan, and the Soundtrack of Summer Tour