Pennsylvania powder scare declared safe

Federal and local investigators in Lancaster, Pennsylvania, have determined that an envelope sent to an office building that contained a strange white powder last Friday meant no harm.

Approximately 200 workers were evacuated from the Lancaster County Assistance office on Manor St. for several hours. At the time, the block was closed to traffic while investigators examined the envelope that had arrived in the office's mailroom, Lancaster Online reports.

Six office employees who were in contact with the envelope were taken to the hospital to be decontaminated and examined as a precautionary measure. The county's Hazmat team and the Federal Bureau of Investigation became involved in the investigation. The Hazmat team found that there were no biohazards such as ricin and anthrax present.

The envelope was sent to the office by one of its local clients.

"He was not disgruntled," Chris Strayer, the chief of the Hazmat team, said, according to Lancaster Online. "There was no reason to believe he had issues."

The Hazmat unit passed the investigation to the FBI, which found no cause for concern.

"There was no threat associated with this letter," Nancy Norris-O'Dowd, an FBI special agent with the bureau's Philadelphia office, said, according to Lancaster Online.

On Thursday, another suspicious letter sent to the Armstrong World Industries headquarters on Columbia Ave. raised concerns. Workers were evacuated from the offices there and an investigation of the case continues.