CHICAGO (WBBM/CBS) — The situation is back to normal a day later, but right across from the Dirksen Federal Building downtown Wednesday, a building was evacuated for more than four hours due to a suspicious package.

As WBBM Newsradio 780’s Steve Miller reports, police Bomb and Arson Section Cmdr. Eugene Roy says the package came into the JP Morgan Chase mail room on the third floor at 131 S. Dearborn St.

LISTEN: Newsradio 780’s Steve Miller reports

It was a piece of U.S. Postal Service mail, he said.

“The mailroom personnel reported to us it was, quote, ‘abnormally heavy,’” Roy said.

There also appeared to be wires attached to the package, according to Roy.

“During our diagnostics, we observed what appeared to be wires,” Roy said.

Traffic was diverted, and floors 2, 3, and 4 of the building were evacuated, police said.

But the package turned out to be non-threatening.

“There doesn’t appear to be any nexus to terrorism or any criminal activity,” Roy said.

Dozens of workers who had left during the evacuation streamed back in around 8 p.m. Wednesday to get their belongings after the all-clear had sounded.

The Sun-Times Media Wire contributed to this report.

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