They were charged as juveniles with first-degree murder, but one of the suspects could be certified as an adult.
A Collin County judge will consider several factors, including his age, previous record and probable cause.
Prosecutors argued the murder was cold-blooded, premeditated, physical and done without remorse. They also pointed out that the suspect turned 17 just four days after the crime.
Defense attorneys argued that the boys were all just kids.
“You don't throw children to lions,” said one of the suspect’s attorneys, Edwin King. “You don't. That’s not what you do. You don't take a kid and put him in an adult prison and expect their survival rate of much, so that's the decision you make here.”
In court, King said he has proof there was bad blood between the suspect and Mejia because of a girl.
He said the "Suspect had received threats from Ivan Mejia after several arguments. The suspect was stressed. His grades began to fail. A week before the murder, the suspect was diagnosed with general anxiety disorder."
But the suspect allegedly told mutual friends, "I want Ivan out of the way so I can be with her. You don't understand, sometimes I want to kill him,” and “It would be easier if Ivan was out of the picture. Ivan is dead to me."
During the hearing, a Garland police officer took the witness stand to talk about how he caught the suspects dumping Mejia’s body in a creek near Firewheel Town Center in Garland.
He said he saw two teens with shovels running away from the creek. He waited by a car for them to return.
One suspect admitted they were out burying a body.
The other, who was in court on Monday, didn’t talk much and showed no emotion after his arrest, the officer testified.
Police say one of the suspects told them that he set up a fake messenger account posing as Mejia’s on-again off-again girlfriend to lure him to the back of Wylie East.
One of the suspects also told police they got some of their ideas from the crime show, Dexter, and admitted planning the murder for several weeks.
Both the victim and the suspect’s family members were at the hearing, which is expected to last several days.
Mejia was in his first year in the ROTC program at Wylie East High and indicated to the program's sponsor he was thinking about a career in the military.
“This is a tragedy for all the families involved, and regardless of the outcome of the difficult decision the judge makes in this case, there’ll be no winners,” said King. “There's only going to be losers.”
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