Firefighters battled a four-alarm blaze in n Bethlehem on Friday afternoon.
"We had a fire on the roof when we arrived. Because of the wind, it spread quickly across the entire roof. Went up to a fourth alarm fire. We had to call in multiple resources to help us," Bethlehem Assistant Chief Anthony Prelitz told WFMZ.
The fire left businesses on the first floor damaged while more than 100 residents were displaced.
A witness said he saw a man discarding a cigarette in a planter on the rooftop deck just before the fire was discovered.