A son of a founding member of the East Side Victoria gang is headed to trial for allegedly attempting to murder a woman who was a witness in his brother's robbery.

Victorville Superior Court Judge John Tomberlin ruled after a preliminary hearing Wednesday morning there was enough evidence to hold Sammy Conrad Mendez, 23, for trial.

San Bernardino County Sheriff's Deputy Pedro Ortiz testified that he interviewed the victim, Samantha Sanchez, on March 28 at Victor Valley Community Hospital, where she showed up with about 13 stabbing wounds throughout her body.

Sanchez told Ortiz she met up with the defendant and his brother, Andrew Steven Mendez, at a liquor store. They drove to a desert field near Verde and B streets in Victorville and smoked methamphetamine in the car, according to Ortiz. Andrew Mendez then started attacking Sanchez, Ortiz said.

“This is for our brother,” one of the Mendez brothers told her during the attack, according to Ortiz’s testimony.

Sanchez said they were retaliating against her for talking to investigators about being robbed by their brother, Vincent Cordova Mendez, Ortiz testified. Vincent Mendez, 20, was sentenced to two years in prison after he pleaded guilty in November to the robbery, according to court records