Emergency officials in Bridgeport said they were investigating the discovery of a suspicious substance inside an envelope at the Superior Courthouse.
Connecticut State Police said the courthouse on Golden Hill Street was evacuated around 3 p.m. and no injuries were reported.
Officials from the Department of Energy and Environmental Protection said the substance was not being described as a white powder and only said they were investigating the discovery of the substance in the envelope.
The substance is under going multiple tests to determine what it is and if it is hazardous.
State police along with the FBI are investigating.
FBI officials told Eyewitness News that they are treating this incident very seriously.
No other information was released.
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