The searches so far confirm that Gustavo Barragan-Valencia, a 35-year-old Mexican national, was the victim of a homicide in Lincoln County, Oklahoma, on or around October 24, 2012. His death was brutal, involving being shot execution-style with his hands and feet bound and a pillowcase over his head. The OSBI is investigating, and they suspect a link to an illegal marijuana operation.
The case is described as a 'cold case.'
However, none of the search results have yielded any information about arrests being made or any specific suspects being identified or charged. The user's request specifically asks for details on arrests and suspects. Since this information is not available in the current search results, I need to perform more targeted searches.
The next steps will be to specifically look for news articles that might have reported on any persons of interest, even if no arrests were made. I will also search for more recent articles that might provide a retrospective on the case and mention if any suspects were ever considered.
