A fast-moving fire displaced two families and sent a firefighter to a hospital Wednesday.

The fire started in the garage of a townhouse on McFadden Circle in Yonkers just after 11 a.m. The flames moved quickly up to higher levels of the house, but a firewall stopped the fire from spreading to other townhouses.

The families escaped unharmed, but lost most of their possessions.

Dozens of firefighters battled the fast-moving flames for hours before they were able to get the fire under control.

A firefighter was treated for minor injuries at a hospital.

It is unclear what started the fire, but officials are taking a close look at items that were stored in the garage.