A Long Island man lighting a firework was killed when it exploded in his face during a Fourth of July backyard party, according to police.

Gabriel Ruiz-Urresto, 37, ignited the “mortar style” pyrotechnic when it blew up and struck him in the head around 9:30 p.m. Saturday outside his Central Islip home, leaving him dead, the Suffolk County Police Department said. 

Medics rushed to scene, but he could not be saved.

Another Long Island reveler is lucky to be alive after a firework he lit blasted him in the face on Callahans Beach during an Independence Day celebration around 8:50 p.m., police said. 

The victim, Jerry DiMucci, 45, of Fort Salonga, was rushed by medics to Stony Brook Hospital University Hospital.

He was left with serious but non-life threatening injuries, according to cops.