Police say there is an estimated $750,000 worth of damage.
The Red Cross said 12 people, 10 adults and two children, have been displaced. They are being helped with food, shelter and clothing.
No injuries were reported.
Investigation underway into Bethlehem blaze
BETHLEHEM, Pa. - August 31, 2009 Investigators says the three-alarm blaze started around 3:30 a.m. Sunday in a building housing the Southside Burger Company (formerly Greeker's) then spread to apartments next door.
