The Milwaukee Election Commission says a suspicious piece of mail was sent to its office.
Hazmat crews with the Milwaukee Fire Department are investigating out of precaution.
TMJ4 News crews saw a large emergency response outside City Hall, with many fire trucks and other emergency vehicles present.
Watch: Suspicious mail sent to Milwaukee Election Commission deemed not dangerous:
The Milwaukee Fire Department says one person came into contact with the suspicious mail, which had some type of liquid in it, but didn't have any sort of reaction. MFD says further testing of the liquid proved that it was not dangerous. The substance will be tested further to determine what it is.
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