COLLEGEVILLE, Pa. (CBS) — Crews are responding to a fire at the Dow Chemical building in Collegeville, Thursday night.

Officials with the Montgomery County Fire Department tell CBS 3 the fire was reported inside the building on Arcola Road, just after 6 p.m.

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No injuries have been reported.

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What caused the fire remains unclear.

According to the Dow website, around 800 people work at the facility. The 800,000 square foot location has been operating since 2013.

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Dow manufactures plastics, chemicals, and agricultural products.