Firefighters battle a structure fire in the 1200 block of Silo Hill Drive in Grayslake Monday morning. | Photo: Quin O’Brien.

Fire officials say lightning possibly caused a fire that damaged two large townhomes and displaced residents in Grayslake Monday morning.

The Grayslake Fire Protection District responded around 11:20 a.m. Monday to the 1200 block of Silo Hill Drive in Grayslake for a report of a structure fire.

Grayslake Fire Protection District Battalion Chief David Torkilsen said crews arrived to find heavy smoke coming from the eves of a three-story townhome.

The structure is made up of four townhomes built together, Torkilsen said.

The fire originated in one of the middle townhomes and eventually spread to an adjacent unit through the attic space.

Firefighters battle a structure fire in the 1200 block of Silo Hill Drive in Grayslake Monday morning. | Photo: Bryan Berman.

Firefighters made an aggressive interior attack on the fire and used a ladder truck to reach the exterior attic of the structure.

Firefighters brought the fire under control and extinguished hot spots, Torkilsen said.

The Mutual Aid Box Alarm System (MABAS) was activated to bring additional crews to the scene and to cover calls in Grayslake.

The homeowners of the two units were both displaced. There were no injuries to any civilians or firefighters.

The fire is under investigation but it was possibly caused by a lightning strike, Torkilsen added.