MARTINEZ -- A 17-year-old Oakley suspect has been charged with two counts of attempted murder in a violent attack on a family friend and will be tried as an adult, prosecutors say.

Austin DeOrnellas is accused of shooting at and stabbing the 20-year-old victim Monday afternoon after a long-simmering argument boiled over during an online gaming session. Police said DeOrnellas went to the victim's home, pushed the man's mother aside, then shot at him.

After a "break in the action," DeOrnellas stabbed the victim multiple times, according to deputy district attorney Jean Skilling. That break is the reason prosecutors charged DeOrnellas with two separate counts of attempted murder, she added.

The victim was taken to John Muir Medical Center. His wounds were non-life-threatening and he was released the same day.

Sheriff's deputies arrested DeOrnellas at his home, about two miles from the victim's home. The suspect ran through neighbors' yards in an effort to escape, according to sheriff's spokesman Jimmy Lee.

DeOrnellas was arraigned Wednesday and is being held on $2.5 million bail, Skilling said. He also faces one charge of residential burglary, and will next appear in court on Aug. 9.

Kristin J. Bender contributed to this report. Contact Daniel M. Jimenez at 510-262-2728. Follow him at Twitter.com/DMJreports.