Alex Velarde, 22, was shot and killed on November 8, 2015, during an argument outside a Southcrest home in Mountain View, California. His 20-year-old sister, Arline Iribe, was shot first and also died at the scene. The killings were described as execution-style and the shooter was a long-time acquaintance who had been treated like family for years.

The suspect led police on a 20-minute car chase that ended near Joyner Elementary School on November 12, 2015. During the pursuit he discarded a handgun, refused to surrender, and a standoff followed that ended when an officer shot him once in the upper body as he appeared to reach toward his waistband; he was then taken into custody and treated for a non-life-threatening wound.

The suspect was charged with two counts of first-degree murder and a special circumstance allegation of multiple murders. Victims’ relatives described profound grief and questioned why the killings happened. Does anyone have information about Alex, Arline, or the argument that led to this violence?