MARIETTA, Ga. – An 18-year-old man was convicted of murder in the shooting of a baby who was riding in a stroller alongside his mom in a town in coastal Georgia despite the defense’s attempt to cast guilt upon several others, including the child’s parents.

Jurors deliberated about two hours before finding De’Marquise Elkins guilty of 11 counts, including two counts of felony murder and one count of malice murder in the March 21 killing of 13-month-old Antonio Santiago in Brunswick. The man’s mother, Karimah Elkins, was on trial alongside him and was found guilty of tampering with evidence but acquitted of lying to police.

De’Marquise Elkins faces life in prison when he is sentenced at a later date. At the time of the shooting he was 17, too young to face the death penalty under Georgia law. His lead defense attorney, public defender Kevin Gough, vowed to appeal the verdict. A judge denied his request for the teen to be out on bond during the appeal.

Karimah Elkins’ attorney, Wrix McIlvaine, said he would talk to his client and that they would likely appeal.

Sherry West testified that she was walking home from the post office with her son the morning of the killing. A gunman demanding her purse, shot her in the leg and shot her baby in the face after she told him she had no money, she said.

Prosecutors, who declined comment after the verdict, said during two-week trial that De’Marquise Elkins and an accomplice, 15-year-old Dominique Lang, are the ones who stopped West. Prosecutors say the older teen pointed a small .22-caliber revolver at West and demanded money. When West refused several times to turn over the money, Elkins fired a warning shot, shot the woman in the leg and the baby between the eyes, prosecutors said.