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Police make two additional arrests in stabbing

Minneapolis police arrested two more teenagers Friday in the stabbing death of a 70-year-old woman in her North Minneapolis Home, the Star Tribune reported .

The 15- and 16-year-old brothers are being held in the Hennepin County Juvenile Detention Center, the Star Tribune reported. Authorities have until Tuesday to file charges, and are expected to charge the suspects as adults.

Police found the body of Pirkko Gaultney on Wednesday and originally arrested 15-year-old Minneapolis boy in connection with the killing.

When police responded to Gaultney's house on Wednesday, they were called to investigate a burglary, WCCO reported.

Police told WCCO the home showed signs of forced entry and neighbors said it was broken into a few years ago, according to WCCO.

The Star Tribune reported all three boys know each other but none have extentsive criminal history or known gang affiliations.