BETHLEHEM, Pa. -

A water main break in Bethlehem damaged at least two homes and caused a giant sinkhole to open on East Market Street, between New and Center streets, on Sunday.

It is unclear what caused the water line to break.

Crews were called in Sunday morning to fill in the hole and repair the line.

"It is approximately 30 feet by 25 feet. We don't know exactly how far the sinkhole goes. It reaches underground," said Joseph Bolesky, with the Bethlehem Department of Water and Sewer Resources.

Royce Prichett owns a historical home on the block. His home suffered extensive damage.

"The front door was jammed. There were cracks along the front door and the side of the house," Prichett said

Chris Fowler lives two houses down from Prichett. Fowler's home also suffered damage.

"My son, he said 'look daddy! Our house is falling apart too,'" Fowler said.

Fowler and Prichett were allowed to stay in their homes following an inspection.

"He said our house won't fall in today. I'm not too concerned, a little upset by the damage," Fowler said.

Ten homes experienced disrupted water service and were put on a boil water advisory for at least 48 hours.

A portion of East Market Street will remain closed through at least Monday, and the north side sidewalk has been closed.

Crews filled in a portion of the hole with rock on Sunday. They're expected to return to the scene on Monday morning.

Anyone who notices any divots or experiences brown water should call (610) 865-7074.