Photo Illustration by Luis G. Rendon/The Daily Beast/Facebook
A man who drove his truck into a family of five vacationing in Montana, then opened fire on them with a shotgun, had raised “red flags” regarding his mental health in the years prior, according to his sister, and was only stopped when the apparent target of his rage managed to fight back and kill him with his own knife.
After hopping out of his truck, Derick Amos Madden, 37, fatally gunned down 39-year-old David Siau and his 18-month-old daughter McKenzie, who were visiting from Pompey, New York, authorities said. Siau’s wife, Christy, was critically wounded but survived the roadside ambush Sunday. The couple’s two other children were able to flee to safety, miraculously escaping injury.
Madden’s apparent target had been his ex-girlfriend, 30-year-old Christina Siau. Christina, David’s sister, lived and worked as a physician’s assistant at a hospital serving the Native American community in East Glacier. When Madden ran out of ammunition, he drew a knife and began stabbing Christina, according to cops. At some point during the gruesome rampage, Christina, badly wounded, managed to kill Madden at the scene.