MORRIS, Ill. (CBS) — An industrial fire in Morris forced thousands of families from their homes for four days back in June.

The fire broke out inside a warehouse full of lithium batteries – 80 to 100 tons of them – as well as roofing materials and solar panels.

READ MORE: Benet Academy Decides To Hire Amanda Kammes As Lacrosse Coach After Rescinding Job Offer Because She Is Married To A Woman

The burning batteries had to be smothered with 28 tons of cement. Firefighters resorted to the unconventional and possibly unprecedented tactic because using water or firefighting foam could have caused the batteries to explode.

READ MORE: Tony Landers Charged In Attack On Ald. James Cappleman After Alderman Confronted Men Who Were Drinking In Public In Uptown

On Tuesday, the Illinois Attorney General filed a lawsuit against the building’s owner, Superior Battery, for endangering people’s health and the environment.

MORE NEWS: Man Shot, Killed During Home Invasion In South Shore; 4 People In Custody

Representatives from the City of Morris also say the owner didn’t have a business license – so they had no idea what was inside the building until the fire.

CBS 2 Chicago Staff