Fire crews are battling a four-alarm warehouse fire in West Easton, Pennsylvania, along the Lehigh River.
Flames broke out at the building in the 1500 block of Lehigh Drive around 5 a.m. Tuesday, FOX 29 Philadelphia reports.
SkyFOX flew over the scene as heavy smoke and flames engulfed the industrial building. Firetrucks could be seen attempting to extinguish the blaze.
Officials say hazmat crews have also been called to the scene.
Several businesses occupy the warehouse, including a custom coating business, a motor line company and a components warehouse, authorities said. It is unknown if anyone was inside at the time of the fire.
Residents in the area reported seeing the flames from across the river and in surrounding communities.
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There were no reports of injuries.
"Northampton County Emergency Management Services said the Pennsylvania Department of Environmental Protection will be at the site testing for air quality," Lehigh Valley Live reports.
Electricity provider Met-Ed has apparently cut power to the surrounding area, affecting more than 3,700 customers, a spokesman told the media outlet.
This is a developing story. Check back for updates.