Man Drives Into Family At Glacier National Park, Kills 2 With Shotgun

CUT BANK, MT — An Oklahoma man drove his vehicle into a New York family near Glacier National Park, then got out and fired shotgun blasts at them, killing a father and his 18-month-old toddler before the baby's aunt, who knew the shooter, killed him.

Derick Amos Madden, 37, of Goldsby, deliberately drove his car into a group of people who were walking along a roadway around 9 p.m. Sunday, the Glacier County Sheriff's Officer said in a news release Tuesday. He crashed into a tree, got out and fired at the group with a shotgun.

Madden shot and killed David Siau, and continued shooting as the family ran, wounding Christy Siau, 40, of Syracuse, New York, and mortally wounding her 1-year-old daughter McKenzie, whom she was holding.

After running out of ammunition, Madden used a knife to attack 30-year-old Christina Siau, of East Glacier Park, critically wounding her.

Two children ran and were not hurt.

McKenzie Siau later died at the Indian Health Service hospital in Browning. Christy and Christina Siau were flown to a hospital with critical injuries.

Authorities were still trying to determine if Madden, originally of Goldsby, Oklahoma, had the shotgun legally.

The sheriff's office described the attack as an "isolated...incident with a clear nexus between the victims and Madden." It wasn't immediately clear what provoked the attack beyond the prior relationship between Madden and Christina Siau. Madden had mental health issues, the sheriff’s office said.

Madden had been in a prior relationship with Christy's sister-in-law Christina, who killed him. Authorities did not say how he was killed.

Authorities didn't know of any previous interactions that Madden had with law enforcement. He had been working recently in East Glacier, a tourist town and gateway to the mountains in Glacier National Park, according to Jody Hickey, a spokesperson for Glacier County Sheriff Vernon "Napi" Billedeaux.

Christina Siau, originally from New York, had been living in East Glacier. Her family was visiting, Hickey said, according to The Associated Press.

Christy Siau previously worked as a bookkeeper for the American Baptist Churches of New York State, according to social media postings by the organization. She's described as "a long time and beloved member" of the organization's staff in a statement from Executive Minister Rev. James Kelsey.

Christy and David Siau were also active in the First Baptist Church of Hoosick Falls, New York, Kelsey said.