Police outside of the Miami courthouse have blocked off a section due to a "security threat" which appears to be a mysterious device.
Reporters at the scene ready for the indictment have said the bomb squad is in attendance following the discovery.
The mystery device was reportedly found near the media area which has been set up for the hearing.
Miami police have sealed off part of North Miami Avenue in front of the federal court in order to inspect the suspicious item.
It's believed the mysterious device is a television with a message targeting the media written on the screen in white paint. A portable X-ray device was also placed in front of it.
People are being moved on from the area by police who have put yellow tape around the area, asking members of the media to move back toward the street and out of the media area.
Police dogs have been spotted moving through the media area as reporters and film crews have been moved out after the screen was spotted with nobody laying claim to it.
Reporters have said that the "all clear" has been given outside the federal courthouse, with crews now able to return to their locations.
Hundreds of members of the media from around the world were gathered outside the courthouse, outnumbering protesters who were expected to arrive later in the day.
Protests were scheduled for later in the day by Trump supporters who have criticised the felony charges.
Miami Mayor Francis Suarez said the city is ready to handle any protests which may occur, and that local law enforcement has experience handling large demonstrations.
Concerns have been raised by federal officials at the lack of hardened barriers outside the federal courthouse.
"We could have preferred... a more hardened bike rack type situation," a US Secret Service official told NBC News.
Officials are not specifically concerned about Trump's safety, more so the potential safety risk that generally occurs when large crowds assemble, especially given that Florida is a concealed carry state, the source explained.
"You have a higher likelihood of people carrying weapons, so the slightest combustion point could very quickly escalate into some problems," they said.
"That's why you want to have those pathways, which is our normal posture", they added referring to the bike rack lanes.
The official confirmed the security plan set for today's court appearance is not a federal operation. But Secret Service officials emphasised that there is still a "very strong" relationship between the federal agency and Miami officials.
"We understand that is their decision, and we respect it," the Secret Service official said. "It's Miami. They know the community best."
Donald Trump is set to appear in court answering to 37 felony counts that accuse him of willfully retaining classified records, which prosecutors say could have jeopardised national security if exposed, then trying to hide them from investigators who demanded them back.
The case not only holds political implications for Trump, but also profound legal consequences given the prospect of a years-long prison sentence.
The former president is not expected to have a mugshot taken when he surrenders to authorities in Miami federal court according to a person familiar with negotiations surrounding the case.
The lack of mugshot is similar to Trump's recent appearance in court in New York on a separate case involving hush money payments to Stormy Daniels where the businessman also avoided having a mugshot taken.
