A grand jury indicted a 48-year-old Burnsville, Minnesota, man on first-degree murder charges in the stabbing death of his children's mother.

Jason Philip Filas was previously charged with second-degree murder in the May 7 stabbing that left 32-year-old Danielle Grace Warren dead. The grand jury on Thursday indicted him on two counts of first-degree murder and one count of second-degree murder.

According to a criminal complaint, Burnsville officers arrived to the 2000 block of 117th Street East around 9:30 a.m. on a report of domestic violence. They found Warren surrounded by a large amount of blood and a kitchen knife in the hallway.

Warren died at the scene, charges said. Her two young children were in the home at the time.

The 911 caller told police that Warren called them,

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