LITTLETON, Colo. (CBS4)– Fire crews rushed to put out a house fire that had spread to a neighboring home in Littleton on Friday afternoon.

Copter4 flew over the burning homes near Windemere and Mineral Avenue just before 5 p.m.

Copter4 flew over the burning homes in Littleton (credit: CBS)

Flames could be seen from both homes in the cul-de-sac.

(credit: CBS)

Firefighters were working to put out the fires.

(credit: CBS)

What caused the fires is being investigated.

(credit: CBS)

Copter4 flew over another house fire in the same neighborhood, just down the block. Firefighters say embers from the first house fire ignited that fire.

(credit: CBS)

The roof was burning and neighbors tried to put it out with garden hoses.

Copter4 flew over another burning home in the same neighborhood (credit: CBS)

Two Littleton firefighters were taken to the hospital for heat exhaustion.