Daniel Petric

Daniel Petric, nicknamed Danny, was a teenager who attended high school in Wellington, Ohio.

[3] Petric contracted a staphylococcus infection from a skiing injury and was housebound for a year while recuperating from severe spinal damage.

[7] Halo is a series of violent games about a war with aliens, most of them rated "M" (mature) for adult audiences by the ESRB.

Petric moved into Johnson's house for the weekend, playing the game with his friend for up to eighteen hours a day with minimal breaks, a week before the shooting.

"[9] A few minutes later, his sister Heidi and her husband, Andrew Archer, arrived at the house, planning to watch a baseball game together on television.

Daniel drove away in the family van in an attempt to escape to a friend's house, but he was arrested during the drive.

[3] Petric's trial was held from December 15 to 17, 2008[7] at the Lorain County Court of Common Pleas in Elyria, Ohio.

In a psychological report ordered by the defense, Petric had informed the psychologist that he had planned the murder of his parents for a week.

[12] Because of the enormous amount of stress put on him due to his severe infection and resultant spinal injury, Petric was much more susceptible to being influenced by the game, not to mention his youth.

The levels of video games can be replayed over and over again; killed and injured characters, including the player himself, return to their original states at every reset.

Petric, he continued, must have expected that his mother would eventually return to a healthy and normal state, having been immersed in virtual violence so long.

The maximum sentence Petric faced was life in prison without parole, recommended by the prosecuting attorney.

Halo 3 publisher Microsoft commented briefly to the media, "We are aware of the situation and it is a tragic case.