Oscar Adan Martinez-Gaxiola, 24, was killed on April 25, 2016, after going to a rural Webster County, Missouri, home on Hackberry Lane to collect what he believed was a $40,000 drug debt. Martinez-Gaxiola had been involved in a methamphetamine distribution operation spanning multiple counties. He arrived with an associate and was met by a group who had conspired to kill him rather than pay the debt.

The conspiracy was led by Brooke Danielle Beckley and Yovanny Aroldo Mendivil-Balderama, who recruited others including Anthony Edward Donovan, Nathaniel Austin Lee, and Joshua Applegate. The group reportedly practiced with firearms at the residence the day before. When Martinez-Gaxiola exited his vehicle he was immediately shot and incapacitated; investigators determined he never fired his handgun. Court records say Donovan approached and delivered a final fatal shot to the head. The suspects attempted to hide the body and fled but were captured soon after.

Several defendants later pleaded guilty to drug and murder-related charges; Beckley and Mendivil-Balderama received lengthy federal terms, while Applegate, a teenager at the time, pleaded guilty in state court to unlawful use of a weapon. If anyone knew Oscar or has information about the case, please share what can help.