UPDATE: 9/13/2016 2:37 p.m. MST

The Orange County Register is reporting that both firefighters have been found and are safe. Earlier today Dave Brown walked into a ranger station safely. Details on where Javier Avelar was located have not been released.

UPDATE: 9/13/2016 1:24 p.m. MST

The Fullerton Fire Department has confirmed that Dave Brown has been located and is in good health. The location of Javier Avelar is still unknown at this point. CBS Los Angeles is reporting Brown walked into a ranger station this morning.

YOSEMITE NATIONAL PARK -- Rangers in Yosemite National Park are searching for two missing hikers.

The National Park Service reports Javier Avelar and Dave Brown were backpacking in the Hetch Hetchy and White Wolf areas when they failed to return.

The two planned a 6 day trip starting in White Wolf, then heading through Pleasant Valley over Rancheria Mountain and staying on the north side of the Hetch Hetchy Reservoir, then through Hetchy backpackers camp. according to the NPS. The two then planned to hike the road to the Smith Meadow Trail and were scheduled to exit through White Wolf on Sunday, September 11th.

Avelar and Brown have not returned as of yet.

The National Park Service is asking anyone who was in the Hetch Hetchy Reservoir, White Wolf, or Smith Meadow areas between September 6-12 or may have seen Avelar and Brown to contact the Yosemite National Park Dispatch at 209-379-1992.

ABC30 in Fresno is reporting two Fullerton Firefighters have gone missing in Yosemite. The Fullerton Fire Chief told ABC30 that the two men are seasoned backpackers with plenty of experience in Yosemite and that the car they were driving has been located in the park.

Fullerton authorities have not released the names of the fire fighters pending notification of their families. We will update this story as more details become available, at this point it is unclear if Avelar and Brown are the two missing firefighters.