OKLAHOMA CITY -- An Oklahoma City teen is convicted of murder.
Crystian Rivera, 14, is accused of killing his 9-month-old sister last year.
Prosecutors said the teen became angry with the crying baby while he played a video game, Call of Duty: Black Ops.
Prosecutors said Rivera, who was 13 at the time, had been playing the violent shooting game when his anger boiled over causing a real-life tragedy.
Rivera's 9-month-old sister died of head injuries inside the family's apartment last year.
Rivera allegedly admitted to shaking the baby girl.
In juvenile court, a jury convicted the now 14-year-old of murder.
"It wasn't right," Rivera's father, Carlos Beletzuy, said.
Rivera's father disagreed with the guilty verdict but Carlos respects the legal system and jury's decision.
"Everybody says its bad but it's not bad," Carlos said. "I believe in God and I believe in justice."
"What he's being treated as is a youthful offender; that's a hybrid between the juvenile and adult system," attorney David McKenzie said.
McKenzie said because Rivera wasn't tried as an adult, the teen will likely have to serve the next couple of years in a juvenile rehabilitation program; after that he could be released.
Prosecutors want a life sentence imposed if Rivera ever gets in trouble with the law again.
"If he makes a mistake or violate the system, he could be bridged over to the adult system and so he still faces a life sentence if he's not successful in his incarceration," McKenzie said.
Both of Rivera's parents are also charged with child neglect in the case.
Prosecutors said they left the 13-year-old boy alone at home for several hours and they share some of the blame.
That case is still pending.
Rivera will be sentenced for the crime at the end of the month.