tack, White said. But Walker has denied involvement.
DNA evidence in a condom found in the victims' home linked Lawson to the crime, police said. Investigators also say they found a palm print belonging to Walker at the scene.
Lawson lived in Dunbar Village, the hardscrabble project where the attack occurred. Walker was apparently visiting a friend there, White said.
Authorities believe the suspects all knew each other from the neighborhood, but they don't think they knew the victims directly.
Prosecutors have 21 days from the time a suspect is arrested to formally file charges. Lawson was arrested Tuesday. Walker was arrested Thursday.
The 16-year-old Walker, in chains and a jail jumpsuit sat, in a juvenile court Friday, with his mom and dad by his side, to face charges that could put him in prison for the rest of his life.
Walker made a first court appearance on Friday, after which his father, also named Nathan Walker, spoke briefly.
Walker's mother, Ruby Walker, cried at the sight of her son. She declined to talk about the case.
Walker's father, also named Nathan Walker, sat next to her. He later addressed reporters, soft-spoken and sad.
"I love my son. I'm going to stick by him. I don't teach violence to my son so it really puzzles me," said Walker. "Maybe he's just hanging out with the wrong crowd. I don't know."
He acknowledged he hasn't spent as much time with his son as he should have after parting ways with the boy's mother. But he said his son is shy and timid and they went to places like the Fun Depot arcade together.
"It's been a while since I really spent a lot of time with him," Walker said.
In the meantime, his son has been getting in trouble with the law.
Walker is scheduled to be in juvenile court in two weeks for an earlier arrest. He is charged as a juvenile with Page: 1 2 3 Related medicine news :1
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