Witnesses told ABC7 Eyewitness News they heard multiple gunshots and watched the two suspects shoot McKinsey, their son-in-law. Police later tracked down the 77-year-old suspect. New documents reveal a restraining order, a pending divorce, a child custody battle, and allegations of child abuse and domestic violence tied to the case.

The killing happened in a public park in front of witnesses. That detail, along with the restraining order and custody fight now surfacing in court records, points to a family situation that had been escalating for some time before it turned deadly. McKinsey worked on games for one of the country's most recognizable news organizations. His death drew attention well beyond the Bay Area because of who he was and how publicly it happened.

A murder allegedly carried out by grandparents in their late 70s, in daylight, at a sports complex where people were around to hear it happen.