A suspicious powder letter in a mail facility set off a series of events Monday  at the Ogden, Utah IRS center.

ABC 4 News  in Utah and the Associated Press report that hazmat teams and FBI and other agencies responded to the scene and some people are being decontaminated. One report said a person had been taken away on a stretcher and AP reported that some parts of the building had been evacuated while other parts were locked down.

In the past, ever since 2001, the suspicious letters with powder that have gone through the post office have been found to be harmless.

In the past, some people have had panic attacks when being exposed to the letters.  Every letter that goes through the U.S. Postal Service passes through a biohazard detector, which should detect such substances as anthrax. In other words, if it passed through the postal service, it’s unlikley the substance is dangerous.

Time will tell.