2 injured, 3 homes damaged after fire in Lower Macungie Township

LOWER MACUNGIE TWP., Pa. (WPVI) -- Fire tore through three homes and injured two people in the Lehigh Valley.

Flames broke out around 11:15 p.m. on Thursday in the 8000 block of Heritage Drive in Lower Macungie Township.

Video shows firefighters on top of a roof, battling the blaze.

At one point, crews put out a mayday call for a firefighter who partially fell through a floor. The firefighter was rescued by other members and checked out at the scene.

Two people who were inside a home suffered smoke inhalation and seven people have been displaced.

There's no word yet on what sparked the fire.