Frey will be remembered at a memorial Mass at 7 p.m. Monday at Immaculate Conception Church in Tuckahoe, lohud reported.
Several other events are set for this spring in the slain officer's honor, the lohud story said.
According to multiple media reports, Frey and 45-year-old Officer Richard Morrisey were investigating a report of a domestic disturbance on March 21, 1996, when they were ambushed and shot by 26-year-old gunman Richard Sacchi Jr.
Frey died instantly; Morrisey survived.
The sniper, who held police off for 15 hours, killed his grandmother and a family pet before finally shooting himself, multiple media reports said.
According to multiple media reports, Frey, of Bronxville, was a 29-year-old newlywed and 1984 graduate of Archbishop Stepinac High School. He had worked as a transit officer in New York City before transferring to the Eastchester Police Department.
To read the lohud story, click here.
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