Spin Cycle

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Infamous LIRR shooter Colin Ferguson encouraged “inmates to riot and kill prison guards” at an upstate prison, according to a court ruling Thursday that upheld Ferguson’s conviction for violating prison disciplinary rules.

The midlevel Appellate Division said videotape and testimony provided at an internal prison-system disciplinary hearing “provide substantial evidence” that Ferguson engaged in “conduct involving the threat of violence and conspiring to riot after a correction officer overheard (Ferguson) encouraging inmates to riot and kill prison guards with the use of weapons.”

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The incident occurred on Sept. 11, 2011, at Attica Correctional Facility, according to state records. The internal hearing was held a few days later.

Ferguson had claimed the displinary hearing officer was biased against him.

Ferguson killed six and wounded 19 on a Hicksville-bound Long Island Rail Road train in 1993. He now is held at Upstate Correctional Facility in Malone, near the Canadian border, serving a 315-year sentence, according to state prison records.