A New Jersey U.S. mail handling facility was evacuated as a precaution Friday as hazmat crews evaluated the area following workers' reports of a strong, sweet smell in the building, authorities said.

There were no known suspicious packages in the carrier annex, which is where postal workers sort and prepare mail for local delivery, on Route 130 in Hamilton Township, authorities said.

The investigation at the facility, which is across the street from a U.S. post office decontaminated after receiving four letters that contained anthrax shortly after the Sept. 11 terrorist attacks, concluded Friday afternoon and routine postal operations resumed.

Earlier in the day, Chopper 4 captured an extensive emergency presence outside the facility as crew members donned yellow hazmat suits and firefighters stood by.

No injuries were reported.

"U.S. postal officials are confident that there is no danger in opening mail that has been distributed through this facility," a spokeswoman for the Hamilton mayor's office said in a statement. "All mail distributed from this facility has previously been processed by the United States Postal Service."