WOODLAND PARK - Crews battled the heat as they worked to knock down a two-alarm fire at a plant in Woodland Park.

Firefighters were called to the Automotive Innovations building on Andrews Drive Thursday afternoon. Four people were treated for heat-related injuries. The injured included a Woodland Park firefighter and a police officer, a Totowa firefighter and an employee at the plant.

"Our priority is to make sure we put out the fire, while at the same time keeping our firefighters healthy and well," says Woodland Park Mayor Keith Kazmark.

Witnesses say it appears the fire started outside the building in a pile of cardboard, but firefighters have not been able to confirm that.

Misting tents and fans were brought in and a local store donated boxes of bottled water. A large ambulance was also brought in, capable of treating up to 11 patients.

The plant is in the industrial park area of the township. Several neighboring departments responded to assist in fighting the blaze, which took about two hours to get under control.