At least three deaths have been blamed on a crippling ice storm that has been plaguing the Midwest over the weekend and it threatened to stay near or below freezing through Martin Luther King Jr. Day. State Highway Patrol in Missouri said that two people were killed in separate accidents, while authorities in Oklahoma said another person was killed in a semi-truck accident.

Ice buildups of one-quarter to slightly less than a half inch were expected to continue into Sunday morning from southeastern Kansas to central Missouri. Becky Allmeroth, a state maintenance engineer for the Missouri Department of Transportation, said ice is “the most difficult storm to fight.” READ MORE