Crews searching for a missing man at Grand Canyon National Park made an unexpected discovery this summer. The remains of another person who authorities believe was last seen at the park in 2015.

The remains are believed to be 56-year-old Scott Walsh, who was last seen stepping off a shuttle bus at the park’s South Rim in 2015. The clothing had blended in with the surroundings, and the body was positioned in a way that made it almost undetectable, said park spokeswoman Joelle Baird.

The medical examiner’s office is working to confirm the identity.

Baird said Walsh had been living in Ecuador but had a driver’s license out of Brooklyn, New York.

Park rangers were able to link prescriptions found in a pack belonging to Walsh with identification in a jacket found with his remains.

Crews had been looking for Gabor Berczi-Tomscanyi, a Hungarian national who lived in Hong Kong. He was reported missing to police in Las Vegas in late July while traveling in the U.S. Southwest. The car he was driving was located in a Grand Canyon parking lot in mid-August.  Crews located his body a few days later, approximately 430 feet below the canyon’s rim at Yavapai Point.

Authorities have been able to determine that Berczi-Tomscanyi died from a traumatic fall but are still investigating what led up to it.

Mr. Walsh’s body was spotted during an aerial search for Berczi-Tomscanyi. It was found about 600 feet below the Pipe Creek overlook and about 3 miles from where Walsh’s day pack was found in 2015, Baird said.