COLUMBUS —
Hazmat crews are testing white powder that was on an envelope received at U.S. Senator Rob Portman’s office in Columbus on Friday, according to 10TV .
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Crews were called to 37 West Broad Street in downtown Columbus just before 4.p.m. Friday.
Battalion Chief Steve Martin said the incident remains under investigation at this time.
Channel 10 will continue to update this story as it develops
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