A retired Nassau County police officer will avoid prison time after pleading guilty Wednesday to illegally possessing a knife while on probation for a sex offense.

Nassau District Court Judge Francis Ricigliano sentenced Dion Irizarry, 70, of Farmingdale, to 3 years of probation on a misdemeanor charge of fourth-degree criminal possession of a weapon. The term will run concurrent to his earlier sentence of 10 years' probation for attempted sexual conduct with a child under the age of 11.

Irizarry, who retired from the police department in 1989 after 21 years on the force, must also pay a $250 fine. His attorney, Michele Capetola, declined to comment.

Irizarry pleaded guilty in February to one count of attempted sexual conduct with a child and was sentenced on May 1 to 30 days time served, fined $1,425, and ordered to register as a Level 2 sex offender.

Eight days later, two probation officers, conducting an unannounced visit to Irizarry's home, found a gravity knife in his bedroom -- a violation of his probation, according to a felony complaint. The complaint said Irizarry told a probation officer: "The knife is mine. I was supposed to get rid of it, but I didn't."

Dion Irizarry's son, Brandon, played a role in a political scandal that led to the ouster of Nassau Police Commissioner Thomas Dale last year.

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Brandon Irizarry, who worked on former Freeport Mayor Andrew Hardwick's unsuccessful third-party bid for Nassau County executive last year, gave Nassau Police Sgt. Salvatore Mistretta a civil subpoena drafted by the campaign, Mistretta has said. Mistretta served the subpoena on Randy White, a witness in a case Nassau Democrats brought against Hardwick over the validity of nominating petition signatures.

An investigation by Nassau District Attorney Kathleen Rice found Dale improperly intervened in the dispute at the request of Gary Melius, owner of Oheka Castle in Huntington.