LA CROSSE, Wis. -

An investigation is underway into a late night fire at the Bluffview Apartments at 3715 Mormon Coulee Road in La Crosse.

The La Crosse Fire Department says it responded to a call about a possible fire at around 9:15 Thursday night.

Crews found smoke in the first and second floor of the apartment, and activated the fire alarm to alert residents.

Firefighters used a thermal imaging camera to locate the fire, which was inside a wall in the first floor hallway.  They opened up the wall with axes, and put the fire out.

There is minor fire and smoke damage to the area, but no water damage.

No injuries are reported.