(CNN) Human remains have been found at Joshua Tree National Park in California, the National Park Service announced Saturday.

Park authorities were alerted to the possible presence of remains Thursday morning by a cooperating agency that said it may have found evidence of human remains while examining pictures taken at the park last summer.

Park law enforcement rangers hiked to the spot Friday, where they found human skeletal remains and personal items that seemed to have been there for some time, the park said in a news release . Authorities didn't find any form of personal identification at the scene.

The remains were found in a remote part of the 49 Palms Oasis area of the park.

While there is a trail running through the region, authorities said the remains were found in a steep, rocky area away from any trails.

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