Nickolas Adams, 35, was found dead in the pond at Owen Park in Tulsa on the morning of February 3, 2015. An autopsy ruled his death a homicide from blunt force trauma to the head and drowning. He was a member of the Sisseton-Wahpeton tribe and was homeless at the time.

Adams was last seen in downtown Tulsa the evening of February 2. Investigators found signs of a violent struggle near the roadway by the pond: some of his belongings, blood evidence, a trail toward the water, and road-rash–type wounds. His body was recovered nude, and the scene suggested he may have been beaten and rendered unconscious before drowning.

The Tulsa Police Department lists the case as unsolved and has asked the public for help. Does anyone have information about Adams’ movements on February 2, 2015, or saw anything near Owen Park that night?