Crews battled heavy smoke and flames in the early morning hours of New Year's Day, as a blaze was upgraded to 4-alarms.
Firefighters first responded to reports of a blaze in the warehouse of the Arrow Safety Device Co. on the 200 block of Holeman Street in Mount Holly, Burlington County, just after 3 a.m., officials said.
It took crews nearly four hours to get the fire under control.
No injuries have been reported.
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Officials have yet to confirm whether the warehouse is in use, but the website for Arrow Safety Device indicated the firm no longer uses the Mount Holly facility.