( CNN ) -- Colorado Sen. Mark Udall 's brother died on a hiking trip in the Rocky Mountains , officials said . Randy Udall , 61 , went on a hike in the Wind River Range in Wyoming on June 20 and was expected back six days later . When the experienced hiker did not return , family members reported him missing . Rescue crews and helicopters scoured mountain passes to find him . A helicopter search team discovered his body in a remote area on Wednesday afternoon , the Sublette County Sheriff 's Office said . It appeared that he died of natural causes , the senator said in a statement , thanking rescuers for their search efforts . `` Randy left this earth doing what he loved most : hiking in his most favorite mountain range in the world . He appeared to be on the obscure , off-trail route that he had proposed to his family , '' the statement said . `` The entire Udall family is touched beyond words by the tremendous outpouring of support from people around the country . Randy 's passing is a reminder to all of us to live every day to its fullest , just as he did . '' CNN 's Greg Morrison and Kevin Bohn contributed to this report .
Mark Udall , 34 , dies while on a hike in the Rocky Mountains . Searchers find his body in a remote area in Montana . Detective Mark Warner says it appears his brother died of natural causes .