Search efforts are suspended for a 26-year-old Spearfish man missing since Friday.
Lieutenant Boyd Dean with the Spearfish Police Department says team members are confident that they searched every draw in the five-square-mile area known as Lookout Mountain.
Unless further evidence is found, Dean says there will be no more search missions for Robert Keith Johnson.
Hikers found some of Johnson's belongings on the mountain, which prompted the search.
People close to him believe he could be suffering from mental health or substance abuse issues.
The investigation continues. Boyd says they will re-interview friends and they remain in contact with family members of Johnson.