Police say a 24-year-old Sioux Falls woman chased another woman with a knife Sunday night and then kidnapped her baby.
Ursula Hairy Shirt was arrested for aggravated assault, kidnapping and giving police a false name.
According to police, a 36-year-old woman and her boyfriend were sitting on the porch at 330 N. Blauvelt Ave. when Hairy Shirt approached around 8 p.m. Hairy Shirt threatened her with a knife and chased her off the porch.
As the victim ran away to call 911, Hairy Shirt grabbed the victim's 5-month-old daughter from a nearby car and took the child into the house and locked the door, police said.
When police arrived, they had to forcibly remove the infant from Hairy Shirt's arms, police spokesman Sam Clemens said.
The police report didn't indicate who lived at the address or why Hairy Shirt was upset with the victim.
A preliminary breath test registered Hairy Shirt's blood alcohol level at .36.