Philadelphia police say the envelope contained a vial with a plastic bag over it. But they say tests show no harmful materials were inside.
Authorities say workers were evacuated shortly before noon Friday and the office reopened a few hours later.
Philadelphia police say the envelope contained a vial with a plastic bag over it. But they say tests show no harmful materials were inside.
Authorities say workers were evacuated shortly before noon Friday and the office reopened a few hours later.