Kevin "Kayvon" Edson, 25, has been charged with making a false bomb threat, disturbing the peace, disorderly conduct, possession of a hoax device and disturbing a public assembly.
Edson pleaded not guilty in Boston Municipal Court, allegedly telling police that he knew that he was doing.
"It was being conceived in my head. It was symbolism... the performance got the best of me," he said according to lawyers.
Prosecutors ordered the MassArt student be held on $100,000 bail and has been sent to Bridgewater State Hospital for a psychiatric evaluation.
His mother said that Edson has bipolar disorder. He has been off his medication for months.
In a statement, his family said, "Our family is so sorry and emotionally overwhelmed by the events at the finish line of the Boston Marathon yesterday. To have this happen on the one-year anniversary of such a horrific crime is unfathomable."
The scene near the Boston Marathon finish line was evacuated Tuesday night when a bare-foot man, identified later as Edson, dressed in black and carrying a large backpack ran towards the finish line yelling “Boston Strong.” He told officers that he had a rice cooker in his backpack.
A second suspicious backpack also was found Tuesday. Officers determined it had been left behind by a media outlet and was not dangerous, but it too was destroyed.
"With the marathon coming, our officers are taking it seriously," police Superintendent Randall Halstead said. "The safety of the public is utmost."
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