Police Test Suspicious Powder Found In Mail At 225 Liberty St. Building

NEW YORK (CBSNewYork) -- Police rushed to the 225 Liberty St. building in Lower Manhattan Tuesday night after an envelope with suspicious powder was discovered in the mailroom.

An employee at the building, formerly known as 2 World Financial Center, opened the envelope and found the suspicious substance, police said.

The substance was isolated and was being tested late Tuesday, police said.

The mailroom was closed off.

One employee was exposed to the substance and was being evaluated late Tuesday, the employee had not complained of any sickness late Tuesday.

CBS2's Jessica Layton reported there was a large police presence at the scene Tuesday evening.

The building is located across from the World Trade Center site.

On April 12, 2012, the same building was evacuated due to a suspicious package that turned out to be a novelty item.

Police that day said workers were X-raying mail and discovered what appeared to be a hand grenade inside a package, but it turned out to be gag gift -- a fake explosive with a sign reading "COMPLAINT DEPARTMENT -- Please Take A Number."

Time Inc. and other companies are based at 225 Liberty St.