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Survivors in attack on family released from Montana hospital

This 2019 photo shows a street in the village of East Glacier Park, Mont. Authorities said a man drove his pickup into a family as they walked through the tourist village on Sunday, July 17, 2022, then shot and killed an 18-month-old girl and her father before the toddler's aunt killed the assailant. (Rion Sanders/The Great Falls Tribune via AP)

SYRACUSE, N.Y. (AP) — Two sisters-in-law have been released from the hospital after suffering critical injuries during a brutal attack near Glacier National Park in which two members of their family were shot and killed.

Christy Siau, 40, of the Syracuse, N.Y. area, was shot in the July 17 attack on Montana’s Blackfeet Indian Reservation and her 18-month-old daughter McKenzie and husband David were killed, according to authorities. Christina Siau, 30, of East Glacier Park, was stabbed before managing to kill the assailant.

The sisters-in-law were released from a Montana hospital Tuesday, the Siau family’s pastor, Dan Werthman, told the Syracuse Post-Standard.

Authorities say a Montana man, Derick Amos Madden, plowed into the family with his pickup truck as they were walking along a sidewalk in the small tourist town of East Glacier Park, then shot three of them with a shotgun. McKenzie was shot as her mother tried to run away with the toddler in her arms, according to Glacier County officials.

Madden ran out of ammunition and attacked Christina Siau with a knife but she fought back and killed him, authorities said.

Two other children of David and Christy Siau were present but not injured.

Authorities have not released a motive but said Madden, originally of Goldsby, Oklahoma, had mental health issues and a prior relationship with Christina Siau.