Mt. Sinai Man Killed Ex’s New Boyfriend Before Killing Himself, Cops Say

A Mount Sinai man fatally shot himself after allegedly gunning down the new boyfriend of his ex-girlfriend outside of a bar in Port Jefferson Station on Sunday night, Suffolk County police said.

Michael Skiadas confronted his ex-girlfriend, Jessica Kasten of Lloyd Harbor, and her new boyfriend, Frank Panebianco of Mount Sinai, both 28, as they were leaving Long Island Pour House on Patchogue Road at 11:20 p.m., police said.

When an argument broke out, Skiadas walked over to his Jeep that was parked nearby and pulled out a shotgun, police said.

One of the group of friends that Kasten and Panebianco were with, 32-year-old Jack Schneider, tried to calm down Skiadas, who hit Schneider in the head with the gun, police said.

Kasten and Panebianco tried to drive away northbound on Patchogue Road, when Skiadas allegedly ran toward their car and fired two shots, hitting Panebianco in the abdomen, police said.

Skiadas then returned to his vehicle and fatally shot himself, police said. He was pronounced dead at the scene.

Panebianco and Schneider were taken to Stony Brook University Hospital, where Panebianco was pronounced dead and Schneider was treated for non-life threatening injuries. Kasten was not injured.

Homicide Squad detectives are continuing the investigation.