Deer Park Crash Kills Man; Police Car Struck While Responding

On Monday, July 14, 2025, at approximately 3:45 a.m., Anthony Guglielmo, a 56-year-old Deer Park resident, was driving a 2013 Mini Cooper northbound on Deer Park Avenue when it collided with a 2011 Jeep Liberty at the intersection of Grand Boulevard, according to Suffolk County Police.

Anthony Guglielmo, a 56-year-old Deer Park resident, was transported to Good Samaritan University Hospital in West Islip following a collision on Deer Park Avenue and Grand Boulevard at approximately 3:45 a.m. Monday morning. He was pronounced dead at the hospital, according to Suffolk County Police. The driver of the other vehicle involved in the collision, Stefanie Russo, 37, of Hauppauge, was also taken to Good Samaritan University Hospital with non-life-threatening injuries.

A Suffolk County police officer, responding to the fatal Deer Park crash, was involved in a second collision just minutes later. The marked patrol car, with activated lights and sirens, was traveling southbound on Deer Park Avenue when it was struck by a Ford van at the intersection of Deer Park and Lake avenues around 3:51 a.m. 

The van was traveling eastbound when it collided with the police vehicle. Both the officer and the van driver were transported to Good Samaritan University Hospital in West Islip with non-life-threatening injuries. Deer Park Avenue was closed in both directions between Grand Boulevard and Lake Avenue for approximately four hours following these incidents, reopening around 7:45 a.m. The Suffolk County Police Department First Squad is investigating both crashes.

Deer Park Avenue was closed in both directions between Grand Boulevard and Lake Avenue for approximately four hours following these incidents, reopening around 7:45 a.m. The Suffolk County Police Department First Squad is actively investigating both crashes and urges anyone with information to contact detectives at (631) 854-8152

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