NYPD officer guns down wife’s lover, himself after tracking illicit couple to hotel: police sources

An NYPD cop tracked his wife and her young new lover to a hotel — then fatally shot the man before killing himself in the horrific love triangle gone awry, law enforcement sources told The Post on Monday.

Crazed off-duty Officer Sean Armstead, 36, had followed spouse Alexandra Vanderheyden, 35, and her 20-year-old beau, Edward Wilkins, to a La Quinta Inn in upstate Wallkill around 10:30 p.m. Sunday, sources said. 

Vanderheyden told investigators she believes that Armstead tracked her through her cellphone, sources said.

Sean Armstead
Off-duty Officer Sean Armstead allegedly killed his wife’s lover before turning the gun on himself.
Sean Armstead
Armstead had followed the pair to a La Quinta Inn upstate.

Armstead then chased the pair out of the hotel, and the illicit lovers hopped in their car to flee, with the cop in his own vehicle in close pursuit, sources said. 

The cuckolded hubby eventually slammed into their ride near the intersection of Route 211 East and Tower Drive outside a Buffalo Wild Wings, according to sources. 

Wilkins then got out of the couple’s car and ran off, but Armstead followed him and unloaded his weapon at him, firing off 16 rounds, sources said. 

Sean Armstead and his wife, Alexandra Vandeheyden, are seen in a Facebook photo.
Sean Armstead and his wife, Alexandra Vandeheyden, are seen in a Facebook photo.
Alexandra Vanderheyden and Sean Armstead.
Police sources said Armstead fatally shot Vanderheyden’s lover, then killed himself.
Armstead allegedly chased the pair from the hotel.

The younger man was fatally struck in the back and head, according to sources. 

Then Armstead reloaded his weapon and fatally turned it on himself, sources said. Vanderheyden was unhurt, sources said.

A pool of blood could still be seen outside the restaurant Monday morning.

Police at Buffalo wIld Wings.
The shooting took place at a Buffalo Wild Wings in Wallkill, around 10:30 p.m.
Buffalo Wild Wings in Wallkill, Orange County.
The violence took place near Buffalo Wild Wings in Wallkill, Orange County.

“It happened outside,” a Buffalo Wild Wings manager told The Post. “The night manager told me she kept everyone inside and locked the doors. We closed early last night. I don’t even think they came in here.”

Armstead was appointed to the NYPD in July 2011 and worked in PSA 8, which patrols NYCHA developments in a section of the Bronx. 

Back in 2016, Armstead was assaulted and robbed of his wallet — containing his NYPD identification card — while walking his dog in Harlem, according to police sources.

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