Jurors convicted a St. Paul woman Wednesday of fatally stabbing her boyfriend last year.

Natalie J. Pollard, 34, was convicted of second-degree unintentional murder. Jurors acquitted her of second-degree intentional murder.

Pollard’s attorney, A.L. Brown, argued at trial that Pollard acted in self-defense when she killed Obinna Udo Nwankpa, 30, on July 2.

Assistant Ramsey County Attorney Susan Hudson told jurors that Pollard had a history of being violent with Nwankpa, the father of her unborn child.

According to the complaint: Police were called about 4:30 a.m. to the 600 block of Burr Street for a domestic dispute and found Pollard standing in the living room, her shirt covered in blood. Nwankpa was face down at the bottom of the basement stairs.

Nwankpa had a stab wound to the left side of his chest and was unconscious. He was taken to Regions Hospital, where he died.

Pollard told police that Nwankpa had come and gone from the home a few times that day in the early morning hours. She said he hit her and tried to stab her, but that she was able to turn the blade toward his chest.

CHAO XIONG