EAST STROUDSBURG, Pa. -

One person had to jump from a second story window to escape a large house fire in Monroe County early Tuesday, officials said.

The fire broke out around 12:30 a.m. at 42 Lackawanna Ave. in East Stroudsburg.

At least five fire companies responded to the blaze, and crews are still working to put out hot spots. The fire damaged the house next door, as well.

Officials are working to determine what sparked the fire, but they told 69 News a tenant fell asleep while smoking in bed. It appears the cigarette set fire to the curtains and quickly spread.

Two people were transported to the hospital, and one suffered burns to arms and legs, officials said.

Nine people were displaced, and four row homes have been damaged.

Refresh this page for the latest in this developing story.