Police in Montgomery County are investigating a strange warehouse robbery.

Police say it happened sometime between July 1 and this Friday at the Young's Petroleum warehouse on the 3100 block of Deep Creek Road in Upper Frederick Township.

Police say the suspects gained access to the building through an upper rear window.

Stolen items included two guitars, an amplifier, foot pedals, luggage and hundreds of DVDs and CDs.

Anyone with information is asked to call the State Police barracks in Skippack.