NORTH UTICA, Ill. (AP) � Lawsuits have been filed, four months after three Chicago men died in an explosion while fishing and making a fire along the Illinois River.
Lawyers believe they know how the explosion occurred.
They're accusing construction companies of leaving behind an explosive rod after a demolition project near Starved Rock State Park.
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The lawsuits allege that the men used the rod to prop up a pan, and that heat caused it to explode.
Companies identified in the lawsuits declined to comment. Starved Rock is about 75 miles southwest of Chicago.
The men had seven children.