(KGTV) – A mystery involving an untouched In-N-Out burger found on the streets of New York has been solved, and it has a San Diego origin.

Over the weekend, an Instagram user posted a photo of a pristine Double-Double burger from the West Coast burger chain sitting on a street in Queens.

The sighting raised plenty of eyebrows across social media since the nearest In-N-Out restaurant is about 1,500 miles away.

According to the New York Post, IG user Lincoln Boehm saw the wrapped sandwich and decided to take a photo. He told the Post that the burger sighting “genuinely shook me to my core.”

Boehm’s post created a buzz online that had media outlets and social media users-turned-detectives across the country trying to find answers. Days later, someone with a San Diego connection stepped forward with an explanation.

In an article posted on Vice.com, Boehm wrote how a 16-year-old New York student contacted him and laid out the tale that led to a dropped burger.

The student, named Helen, told Boehm she had been visiting family friends in the San Diego area and stopped by an In-N-Out in Encinitas before boarding her flight back to New York.

Her order? Two Double-Doubles with no sauce and two cheeseburgers.

Helen carried the sandwiches on her lap throughout her flight from San Diego to JFK Airport, but after landing, she ran to catch a bus for home and ended up dropping one Double-Double on the road.

The other burgers did not suffer the same fate, Helen told Boehm.

Boehm has since decided to do something positive in light of his new-found fame. He and a friend designed special T-shirts in honor of the discovery, with all proceeds going to the Food Bank For New York City.