Teen Found Guilty of Murdering Baby During Robbery

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De'Marquise Elkins (Photo courtesy: Glynn County Police, Photo Date: 3/22/2013)

(CNN) — After deliberating for almost two hours, a Georgia jury found 18-year-old De’Marquise Elkins guilty Friday of multiple charges, including felony murder, in the fatal shooting of 13-month-old boy during a robbery.

Elkins also was convicted of aggravated assault and other charges for shooting pastor Wilfredo Calix-Flores during a mugging 10 days before the baby, Antonio Santiago, was shot in the coastal city of Brunswick.

Antonio Santiago celebrating his first Christmas in December of 2012., Photo Credit: Sherry West, of Brunswick, Ga., Photo Date: December of 2012

Antonio Santiago celebrating his first Christmas in December of 2012., Photo Credit: Sherry West, of Brunswick, Ga., Photo Date: December of 2012

His mother, Karimah Elkins, was convicted of tampering with evidence for her alleged role in trying to cover up the March shooting.