WEST DES MOINES, Iowa — West Des Moines Fire Department released more information about house fire over the weekend.

Crews were called to the 500 block of 8th Street in West Des Moines around 6:15 a.m. Saturday morning.

Fire marshal Mike Whitsell said a passerby noticed the house on fire.

When crews got there, the house was engulfed in flames. Crews said flames were visible from the roof, door and windows. They say most of the second floor collapsed to the first floor.

Firefighters were able to make it inside the home, but due to the intensity of the fire went back outside.

Whitsell said no one was home at the time of the fire. However, four of the six dogs were inside and died.

The cause of the fire has not been released at this time.