Fire torched a westside house house early Sunday, and arson investigators say it was no accident.

Fire crews responded to the 700 block of Montezuma just before 4:30 a.m.

When they arrived they say the house was burning.

Firefighters worked for about 45 minutes to put that fire out.

When they did arson investigators moved in and located a match at an outside wall.

They say that appears to be the origin of the fire.

The house was vacant.

Firefighters estimate damages at more than $27,000.