
A shrine honoring the victimes of Friday's murder-suicide lies on the corner of Startree and Bottletree lane in Saugus, Calif. Ryan Painter/The Signal.
Detectives examine possible murder-suicide motives
Homicide detectives know who killed the Birnkrant family, but no one knows why the patriarch of that Saugus family did it. Michael Joseph Birnkrant, born Dec. 12, 1966, shot and…