Gary Rullo pleaded not guilty to charges that he stalked RPI president, Shirley Ann Jackson.
Last month, Rullo was caught sending her numerous emails and putting up wanted posters, asking for any information that could lead to the arrest of Jackson.
Carmelo Laquidara, Assistant District Attorney, said, "I think he targeted her because president Jackson is on the Board of the Directors of Federal Express. Mr. Rullo is a former employee of Federal Express. Mr. Rullo has been diagnosed with suffering from delusions."
Defense Attorney Charles Wilcox, said, "I don't think he's mentally unstable. He has an obsession with this Federal Express thing because of his involvement in it, but he's not mentally unstable. He's not dangerous."
But prosecutors said President Jackson fears for her safety. RPI declined to comment.
Laquidara said, "She's very afraid. She's taken security measures as president of RPI. She has security with her whenever possible. She is afraid even though incarcerated right now, she is afraid for her safety. The allegation is that he made a threat that if she harms his family in any way he will rip her throat out."
Wilcox said, "I don't think he committed a hate crime, that's for sure. And that's why he's pleading not guilty."
Prosecutors said Rullo targeted Jackson because of her race. He is charged with one count of stalking and numerous counts of aggravated harassment. He remains in Rensselaer County jail without bail.