Long Island man killed in crash, while Suffolk cop car responding to scene is struck: police

Long Island man killed in crash, while Suffolk cop car responding to scene is struck: police. Suffolk County, Long Island.

Updated Jul 14, 2025
CRITICAL INCIDENT
County
suffolk County
Reported
Source
News Sources

Map showing incident location at 40.7800, -73.3000 Incident location, Long Island

What Happened

A 56-year-old Deer Park man was killed in a rollover crash early Monday morning, followed by a second collision involving a police vehicle responding to the fatal scene, according to Suffolk County police.

Anthony Guglielmo was driving his Mini Cooper when it collided with a Jeep traveling westbound on Grand Boulevard in Deer Park around 3:45 a.m., police said. The collision resulted in a rollover crash that proved fatal for Guglielmo, who was rushed to Good Samaritan University Hospital in West Islip where he was pronounced dead.

The driver of the Jeep was identified as Stefanie Russo, 37, according to police. Russo was taken to the same hospital with non-life-threatening injuries following the crash.

Just six minutes after the initial fatal collision, a second crash occurred involving emergency responders. A Suffolk County police officer responding to the fatal crash scene was struck at 3:51 a.m. while driving a marked police vehicle with sirens flashing, according to authorities. The police car was hit by a Ford van at the intersection of Deer Park and Lake avenues.

Both drivers involved in the second crash were also transported to Good Samaritan University Hospital with non-life-threatening injuries, police said. The officer’s condition was not specified beyond the non-life-threatening classification.

The crashes resulted in a total of one fatality and three people injured across both incidents that occurred within minutes of each other. Both crashes remain under investigation by Suffolk County police, with no determination yet made on the cause of either collision.

Location & Road Context

The fatal crash occurred on Grand Boulevard in Deer Park, a major east-west thoroughfare that runs through central Suffolk County. The secondary crash involving the responding police vehicle happened at the intersection of Deer Park and Lake avenues, indicating the proximity of the two incidents in the same general area.

The early morning timing of both crashes, occurring before 4 a.m. on a Monday, suggests minimal traffic conditions at the time of the collisions. The quick succession of the two incidents highlights the additional dangers faced by emergency responders when arriving at active crash scenes.

Suffolk County police have not released information about potential charges or citations related to either crash. The investigation into both incidents is ongoing, with authorities working to determine the cause of the initial fatal collision between the Mini Cooper and Jeep.

No details have been provided regarding whether speed, impairment, or other factors contributed to either crash. The investigation status suggests that determinations about fault or potential criminal charges may be pending further analysis of the crash scenes and evidence collection.

Disclaimer: Incident information on this page is compiled from public sources including police reports, traffic agencies, and news outlets. It is provided for informational purposes only and may not reflect the most current status of this incident. Do not rely on this information for legal, insurance, or emergency decisions. For emergencies, call 911.