The Secret Service will be in charge of the overall security plan when former President Donald Trump appears for his arraignment in lower Manhattan on Tuesday.

Robert Sica, a retired Secret Service agent who was the special agent in charge of the New York Field Office, joined NY1's Dean Meminger Sunday to talk about what to expect.

A New York grand jury on Thursday indicted Trump, making him the first current or former U.S. president to be charged with a crime.

Asked what role the Secret Service would play in getting Trump into the court building, Sica said it would be a "seamless" process.

"We're working closely with the New York City Police Department, the New York Police Department, and the New York City court system," he said, adding that Trump would arrive via motorcade through a non-public entrance and be escorted to his arraignment.

"As a former president, his protective detail is scaled down considerably, and is augmented by field office agents from around the country," Sica said.

According to Sica, the Secret Service "will be a part of the visit into the courthouse, and the footprint will be appropriate to the courtroom."

On Sunday, Lucian Chalfen, a spokesperson for New York's courts, said court officers were coordinating with the Secret Service and other law enforcement agencies to provide security at 100 Centre St. and the city’s other courthouses.

Court officers have been on high alert in recent weeks, Chalfen added.

"There will be Secret Service agents in and around the courtroom," Sica said. "Most of them you won't even see, but that footprint will be there."

"It's my understanding that the former president will not be handcuffed," he added.

Asked how the agency would deal with the unique situation, Sica said: "I realize that this is a historic moment for the country."

"However, we are not involved in the arraignment proceeding whatsoever," he added. "Our role is purely the security and safety of former President Trump."