The body believed to be that of former UFC middleweight champ Evan Tanner was found Monday near the deserted campsite where Tanner disappeared some days before.

The body was spotted by a helicopter in an area of Imperial County near the California-Arizona border, sheriff Lt. George Moreno said, but authorities have not yet identified the corpse.

Tanner, a former Ultimate Fighting Championship middleweight and a United States Wrestling Federation heavyweight champion, had planned to take a trip to the desert since last month and he has been missing since last week. Sheriff’s officials said that family members kept in touch with Tanner through text messages since his leaving Wednesday, and they started worrying when he stopped responding.

On his journal for Spike TV, Tanner wrote that he planned to go “so deep in the desert, that any failure of my equipment could cost me my life.”

A member of his management told Yahoo! Sports that they had been told that the sheriff’s officials, who found Tanner, “believe that his motorcycle had run out of gas, so he went to walk out in like 115- to 118-degree heat.”

The helicopter found him miles away from his camp, and officials think that he probably succumbed to the heat.

Temperatures in the area were very high during the weekend, topping out at 114 on Sunday, Moreno said.