Status: Open
Missing date: June 4, 2026
Last known location: Lame Deer, Montana
Tribal affiliation: Northern Cheyenne Tribe of the Northern Cheyenne Indian Reservation, Montana
Investigating agency: BIA OJS Missing and Murdered Unit
William Loren Jackman was last known to be in Lame Deer and was last seen at the Lame Deer Powwow Grounds entrance. The BIA Missing and Murdered Unit is seeking information that may assist the ongoing search.
Submit tips: Text BIAMMU and your tip to 847411, call 1-833-560-2065, or email OJS_MMU@bia.gov.