Styx & Foreigner Tour Buses Catch Fire

July 2, 2014: Tour buses for the bands Styx and Foreigner caught fire in a parking lot in the Northern Liberties neighborhood of Philadelphia. NBC10.com

Two tour buses belonging to two classic rock bands -- Styx and Foreigner -- caught fire this afternoon in the Northern Liberties neighborhood of Philadelphia.

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The buses were used for crews supporting the bands, in town to play at WMGK's Let Freedom Rock Fest.

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Foreigner let fans know everyone was fine.

Thankfully the buses were not occupied, Band and Crew are Safe http://t.co/Kg9BEFxyRE

— Foreigner (@ForeignerMusic) July 2, 2014

The fire started on the Styx bus and spread to the Foreigner bus, WMGK’s promotion director Dan Fein said.

Both buses were empty at the time, and people had already removed most of their belongings from them. No gear was damaged, Fein said.

Investigators are working to figure out how the fire started.

Styx and Foreigner will still play tomorrow at the Susquehanna Bank Center in Camden. Styx takes the stage on at 8:05 p.m. and Foreigner at 9:40 p.m. The show begins at 6 p.m.

The groups were two of the hottest bands back in the '70s and '80s, Styx on the strength of hits like “Show Me the Way” and “Rockin’ the Paradise” and Foreigner with hits “Cold as Ice” and “Hot Blooded."