The final suspect is behind bars in the beating a 66-year-old Wal-Mart clerk for an iPod on June 17.
Rashad Maurice Wilson, 22, was taken into custody in Auburn, Michigan on Monday as a result of a Crime Stopper tip.
Police say 21-year-old Omar Griffin-Belhac was arrested at an apartment complex in Colorado Springs soon after the crime. A Crime Stoppers tip led detectives to Griffin-Belhac. Griffin-Belhac was booked in the El Paso County Jail.
The third suspect, 24-year-old Akeem Ali Thomas, turned himself in to Pueblo police in June. Thomas is the cousin of Griffin-Belhac. He is the suspected get-away driver.
Thomas was wanted on a $50,000 warrant for Aggravated Robbery of an At-Risk Adult. He's now in the Pueblo County Jail.
Crime Stoppers tips gave detectives reason to obtain arrest warrants on all three men.
The victim, a 66-year-old Pueblo man, was hospitalized in serious condition. He remains in the hospital.