A valley teen has been found guilty in the brutal stabbing death that happened on a San Benito street nearly a year ago. A jury found 19-year-old Robert John Anthony Martinez guilty in the murder of 19-year-old Angel Perez.

Prosecutors say Martinez attacked Perez over car thefts in the area. Perez died from 18 stab wounds in November of 2012. Sentencing is scheduled for tomorrow. Martinez faces up to 99 years in prison.