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Mike Radice, KSL-TV Chopper 5
Hazmat was dispatched to an IRS building after a suspicious substance was found. It was deemed not hazardous.

FARR WEST, Weber County — A suspicious substance discovered Monday at an Internal Revenue Service building is not hazardous, a U.S. Postal Inspection Service official said.

A portion of an office building that houses an Internal Revenue Service mail processing center was evacuated after an unknown substance was found about 11:15 a.m.

The remainder of the building at 1973 N. Rulon White Blvd. was apparently isolated from the affected area. As many as 830 IRS employees receive and process business tax returns in the building.

"A local hazmat team was dispatched and standard procedures for responding to such an incident were implemented," IRS spokesman Bill Brunson said.

The FBI wouldn't comment about the suspicious substance, but U.S. Postal Inspection Service national spokesman Pete Rendina later said the "matter was non-hazardous."

At least two people were taken from the building on stretchers. "Some individuals did suffer medical emergencies, which, at this time, do not appear to be related to this incident," said FBI spokeswoman Debbie Dujanovic.

She said she could not release any additional details about the incident.

— Geoff Liesik and Associated Press