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The Vanguard trailer park in Moonachie, where prosecutors say a 34-year-old man killed his fiance before ending his own life. (Google Street View)

MOONACHIE — A 34-year-old Moonachie man fatally shot his fiancée before putting the gun to his own head and ending his life early Monday morning, according to prosecutors.

Borough police arrived at a mobile home at 3 West First Street just after 3 a.m. on Monday on report of a double shooting. Inside, police found Jeff Scarpanito Jr. and his 33-year-old fiancée April Ellialtioglu lifeless on the living room floor, Bergen County Prosecutor John L. Molinelli said.

"Based on the investigation thus far, it is believed that Scarpatino, Jr. shot Ellialtioglu to death and then shot and killed himself," the prosecutor said.

The autopsy revealed that both died of gun shot wounds to the head, Molinelli said.

The call was placed by a male who lived with the couple inside the trailer, located in the Vanguard mobile home community off Moonachie Avenue.

Detectives from the prosecutor's office, major crimes unit, sheriff's office and medical examiner's office all responded.

Just a week before the fatal shooting, Ellialtioglu wrote in a Facebook post that Scarpanito was her soul mate.

"Words can never express how much I love you and how grateful I am to be with you," she said on Nov. 16. "You are my heart, my soul and my oxygen. Whenever I feel down you know exactly what to say or do to make me feel better. I am the luckiest woman in the universe. I found my soul mate and I'll never leave you. I love you baby so so very much. please never forget that I'll be here for you now and forever."

In response, Scarpanito wrote, "for once I'm speechless I love you beyond human measure."

Prosecutors have not yet revealed a motive for the murder-suicide.

James Kleimann may be reached at jkleimann@njadvancemedia.com. Follow him on Twitter @jameskleimann. Find NJ.com on Facebook.