According to reports, Josael Guevara was killed in a "relation strike among the MS-13."
Capt. Tim Whitecotton of the Walker County Sheriff's Office said Guevara "somehow made the higher-ups mad."
His body was discovered in Sam Houston National Forest on Sept. 23, and 22-year-old Cristian Zamora was arrested the same day.
On Oct. 3, Jose Bonilla-Romero, 17, was arrested, and 18-year-old Ricardo Lara was arrested Monday. All three have been charged with murder.
Whitecotton said the killers used a machete, the MS-13's weapon of choice, according to the FBI.
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