The search for two American climbers who went missing while trying to scale one of the highest peaks in northern Pakistan was called off Saturday.
Kyle Dempster and Scott Adamson, both Utah residents, set out on Aug. 21 to climb the north face of Ogre 2, according to authorities.
The pair was last seen on Aug. 22, the day before a storm hit the mountain.
Jonathan Thesenga, a representative for one of the climber's sponsors, said Saturday that improved conditions would allow helicopters to search for the climbers.
Later that night, when there were no signs of Dempster or Adamson, the families of the climbers made the difficult decision to end the search.
"The search has been called off," Thesenga told CNN. "It was an extremely difficult time for the friends and family waiting and hoping for good news. And it's been devastating to come to the decision to call off the search."
He added that their loved ones are still optimistic that the men will be found.
Dempster and Adamson nearly died trying to complete the same climb last year. During that climb, Adamson broke his leg after falling 100 feet. The pair then fell 400 feet while trying to get back down the mountain.
Six other climbers, who are at the base camp, are ready to ascend if they can help find Dempster and Adamson, according to Thesenga.
"They have built their careers on cutting-edge Alpine ascents from Pakistan to Alaska," Thesenga said. "We remain optimistic that they are going to get out of the mountains and have this amazing story of survival to share."
The Associated Press contributed to this report.