PUEBLO, Colo. -

A man going past a burning house helped save a person inside according to a spokesman for the Pueblo Fire Department.

It happened in the 900 block of W. 17th Street Saturday afternoon.

Firefighters said the person inside the burning home was disabled and likely would not have been able to make it out of the house without the help.

No further details about injuries or the extent of damage was available.

An investigation is underway to determine a cause for the fire but firefighters believe a combination of a lit cigarette and an open tank of oxygen could be to blame.