Fire officials are investigating the cause of a three-alarm fire Monday morning at a building in Maple Shade, New Jersey.According to Burlington County dispatch, the fire broke out at a building in the 1000 block of Maple Wood Drive around 6:30 a.

Investigators say the fire broke out at the office building around 5:45 a.m.

Fire crews were dispatched to the scene at Maple Shade's Park Crossing Apartments at 5:32 a.m., according to Burlington County Dispatch. By 6:09 a.m. the blaze had reached third alarm, and by 6:34 a.m.