A 23-year-old Minnesota woman is behind bars after she allegedly stabbed her boyfriend to death during a "stupid a— argument."

Katerina Ivanovna Markiv is charged with second-degree murder in the death of 25-year-old Quinton McKay Hughes at her apartment in St. Cloud. According to a probable cause arrest affidavit , Hughes called 911 around 4 a.m. Monday to say he had been stabbed by accident following a "minor disagreement."

Dispatchers noted he began coughing and had trouble speaking. Markiv took over the call and said the stab wound was "at his left f—ing nipple." She allegedly apologized to Hughes during the phone call.

Cops rushed to the apartment in the 1200 block of Washington Memorial Drive where they found Hughes unresponsive on the floor with a stab wound and a "significant" a

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