A city in Michigan is perplexed after a a tar-like substance has rained down on their cars, porches and driveways this week.
The black, oily substance first appeared on at least six driveways in Harrison Township on Sunday, and days later, what the material is still remains a mystery.
Michigan Department of Environmental Quality officials collected samples of the substance on Wednesday.

A black, oily substance first appeared on at least six driveways in Harrison Township, Michigan, on Sunday

The mysterious substance remained on outdoor surfaces through Wednesday, when Michigan Department of Environmental Quality officials collected samples
The city’s fire chief sad that it is not bird droppings and is not flammable, according to WXYZ.
Harrison Township resident Paul Schlutow, 73, said ‘everybody’s concerned’ about the substance and the major concern is that the substance could potentially be harmful.
Residents originally believed that the substance could have come from the…
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