The scene of a crash where two cars collided and...

The scene of a crash where two cars collided and a responding police cruiser was involved in a separate crash at Grand Boulevard and Deer Park Avenue early Monday.

  Credit: Paul Mazza

A man died in a two-vehicle crash in Deer Park early Monday, and a Suffolk County police officer was injured in a separate crash while responding to the scene, police said.

The officer, who suffered non-life-threatening injuries, was responding to the scene of the two-vehicle crash on Deer Park Avenue near Grand Boulevard at about 3:40 a.m., and resulted in the death of Anthony Guglielmo, 56, of Deer Park, police said.

Police said Guglielmo was driving his 2013 Mini Cooper north on Deer Park Avenue when his car collided with a 2011 Jeep Liberty headed west on Grand Boulevard. Guglielmo was pronounced dead of his injuries at the hospital. The driver of the Jeep was transported to the hospital for treatment of non-life-threatening injuries.

The officer who was injured was in a marked patrol car, police said. He was identified only as a male.

The officer's vehicle, which was headed south on Deer Park Avenue, collided with a van that was headed east on Lake Avenue at about 3:51 a.m., police said. The officer and the driver of the van, also identified only as a male, were taken to the hospital with injuries that were not life-threatening, according to police.

The two crashes forced the closure of Deer Park Avenue for hours between Grand Boulevard and Lake Avenue.

More coverage: Every 7 minutes on average a traffic crash causing death, injury or significant property damage happens on Long Island. A Newsday investigation found that traffic crashes killed more than 2,100 people between 2014 and 2023 and seriously injured more than 16,000 people. To search for fatal crashes in your area, click here.

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