CHRISTIANA, Del. (WPVI) --
The 2-alarm fire broke out after 4:00 a.m. Thursday on the unit block of River Drive.
Firefighters arrived to heavy flames showing from the rear of the house.
The fire quickly spread to neighboring houses.
The victims were taken to an area hospital for treatment.
So far, there is no word on their conditions.
The cause of the fire has not been determined.