A suspicious package was found at the Federal Courthouse Tuesday morning.

According to the FBI:

The JFRD Hazmat team has concluded their assessment of a white powder letter sent to the US Federal courthouse in Duval County on Tuesday morning. Field test results were negative for dangerous substances. The FBI appreciates the assistance of our law enforcement partners in this matter, and will continue to work with them as the investigation progresses. No additional details can be confirmed at this time.