A fire over the weekend causes extensive damage to a Mankato home.

Mankato-Public Safety responded to a fire at 315 West Pleasant Street at 12:14 a.m. on Saturday.

Firefighters extinguished the fire, which started in the basement and extended to the first floor. Three cats were rescued from the building.

A working smoke detector provided alert to the fire.  Testing smoke detectors monthly ensures they will function in the event of a fire.  There were no injuries.  Damages are estimated at $75,000. The cause of the fire is unknown and under investigation.