Workers in the Monroe County communications department were evacuated after a suspicious letter was opened.

Officials say the substance in the envelope turned out to be toothpaste powder, and that the letter was sent by a Monroe County Jail inmate. Deputies said there was nothing threatening written in the letter, but the sheriff's office will continue to investigate.

The Daily Messenger's news partner News 10NBC was told, by an official in the building, the letter arrived in the county executive's communications office. The letter was opened by a staffer, and a white powdery substance came out and got on the staffer's skin and clothing. Nobody was injured

The communications office went into lockdown. Field tests were being conducted in the office and in the mail room in the basement.