Mankato-Public Safety firefighters responded to the report of a structure fire at 4:11 p.m. yesterday at 521 North Fifth Street. Upon arrival, public safety found the homeowner trying to put out the fire, which had worked its way into the building’s walls. Firefighters extinguished the fire.

No one was injured. The cause of the fire was determined to be an improperly disposed of cigarette. Damages are estimated at $10,000.