ARNOLD, Pa. (KDKA) – Two houses in Arnold caught fire on Tuesday night with one of them becoming fully engulfed in flames.

Photo Credit: Steven Matto – From The Scene Photography

The fire occurred along Fourth Avenue and once one of the houses became fully engulfed, it spread to the next-door home.

Dozens of firefighters responded to the blaze, breaking a few windows out of the front of the house to get to the fire inside.

It is unknown what the cause of the fire and if anyone was hurt.