The Mepham High School alumnus who allegedly said he wanted to shoot up his alma mater was arraigned Saturday in district court in Hempstead on a felony charge of making a terroristic threat.

Peter Andersen, 28, of North Bellmore, was held in jail on $30,000 bond.

He was arrested Friday, more than a week after he allegedly told two women at the Roosevelt Field mall in Garden City that he hated the Bellmore high school and wanted to shoot its occupants.

The women did not report the Dec. 22 comments to the school principal until Thursday, police said.

Police did not have information Saturday on the relationship between Andersen and the two women.

Andersen graduated from Mepham High in 2002.

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According to court documents, Andersen is also known as Piotr Abdel Fattah. Police did not know Saturday how he came by the name.

Court papers indicate he was heard saying: "I hate Mepham, and wish everyone would burn in hell," and, "That school tries to make its students homosexuals and defy God."

The documents said he "continued to rant on and on and as the two female victims started to walk away from him," he said: "I would shoot the -- out of everyone in that school."

First Squad detectives began an investigation, which included a search of Andersen's residence. No weapons were found, police said.

Family members declined to comment at their home in North Bellmore.