A fire at a Mankato home on Volk Avenue has been ruled an arson by Mankato Public Safety officials.

Public Safety says evidence at the scene made the officials determine the cause of the fire was arson. However, they aren’t sure how or where the fire came from.

No one was home at the time of the fire. The damages were estimated at about $60,000. The fire happened Monday night. City workers came across the fire and called 911.

Anyone with any information on the fire is asked to call Mankato Public Safety.