The rapper, born Jahseh Onfroy, was shot and killed as he was leaving a South Florida motorcycle shop on June 18, 2018.
On Monday, jurors found Newsome, Williams and Boatwright guilty of first-degree murder and armed robbery charges, WTVJ reported.
Allen testified that he, Boatwright, Newsome and Williams planned to rob people on the day XXXTentacion was shot and that they traveled to RIVA Motorsports to buy a mask for Williams, the Miami New Times reported.
Authorities said Boatwright and Newsome opened fire on June 18, 2018, while Williams acted as the getaway driver, according to the Miami Herald.
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