New York (CNN) Mail bomb suspect Cesar Sayoc will be held without bond after making his first appearance Tuesday in a federal court in New York.

The defense issued no objection to US Magistrate Judge Robert Lehrburger's decision. Sayoc's preliminary hearing was originally scheduled for Monday, but as courts are closed on Veteran's Day, his hearing has been rescheduled for Tuesday morning.

In a letter, prosecutors had said they were asking that Sayoc be held without bond, based on his flight risk and the danger they said he posed to the community.

Sayoc, who spent Monday night at the federal Metropolitan Correctional Center in Manhattan after a charter transport flight from Florida, entered the courtroom wearing a navy blue prison uniform with a beige T-shirt underneath. He did not wear handcuffs or shackles.

Cesar Sayoc is accused of sending at least 16 mail bombs to several targets.

He conferred with public defender Sarah Jane Baumgartel, who sat next to him, and answered the judge's questions. Lehrburger officially appointed Baumgartel as his counsel.

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