Update 11:33 a.m. Sept. 9, 2012:
The hiker who died in Murrary Canyon Saturday was a 43-year-old foreign national but his name had yet to be released Sunday.
An autopsy was scheduled for this week and toxicology tests will be performed as well, according to the Riverside County Coroner's office.
The man was found unresponsive Saturday afternoon on Coffman Trail, on the Agua Caliente Band of Cahuilla Indians Reservation, according to coroner's officials.
There was no word on his companion, who was found severely dehydrated and taken to a hospital.
A hiker died in Murray Canyon Saturday and his companion was taken to a local hospital in critical condition, officials said.
Deputies from the Riverside County sheriff's Palm Desert station were called by the Agua Caliente Band of Cahuilla Indians tribal Rangers to the Indian Canyons area in South Palm Springs shortly before 1:30 p.m., according to Sgt. Shaun Myers.
Deputies found one hiker unresponsive and another severely dehydrated, Myers said in a written news statement.
Rangers had unsuccessfully performed CPR on the unresponsive hiker but he was pronounced dead at the scene, the sergeant said.
Sheriff's officials caution hikers to always carry proper equipment, such as GPS devices and compasses, and also to wear the right clothing and have plenty of water.
Hikers should also always inform family and friends of their travel plans so that if they are late, someone will notify authorities.