A two-alarm fire at a company that manufactures waxes and specialty oils burned for more than five hours Sunday in Bridgeport.

Flames at C.J. Robinson Co. in the Continental Business Complex in Montgomery County were reported at 2:44 p.m. Sunday, with black smoke billowing for hours as at least 11 fire companies responded.

One firefighter was treated for chest pains, but authorities said it did not appear life-threatening. No other injuries were reported. The fire's cause remained under investigation Sunday night.

It is the third time since 1999 that disaster struck the 100-year-old former textile mill on East Front Street. In 2001, an electrical fire burned for 15 hours, destroying 15 businesses. That came just two years after businesses were flooded when the Schuylkill swelled after Hurricane Floyd.