Injured police officer sues Breonna Taylor’s boyfriend

Sgt. Jonathan Mattingly is alleging battery, assault and emotional distress in his countersuit against Kenneth Walker.
3:28 | 10/30/20

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Transcript for Injured police officer sues Breonna Taylor’s boyfriend
We turn now to the new fallout from the breonna Taylor case. The police officer shot in the operation at her home that left her dead is now suing Taylor's boyfriend, Kenneth walker, claiming he suffered severe trauma and emotional distress. Steve osunsami has the latest. Good morning to you, Steve. Reporter: Good morning, to you, Michael. Just to put this into context this lawsuit is coming from one of the officers in this case who many feel should have been charged with murder but was not. And so for the family of the victim who was killed and her many supporters this is entirely upsetting. He is the face of law enforcement in this divisive case out of Kentucky. When they say her name breonna Taylor who the police agree should have never been killed in her home Jonathan Mattingly was the officer leading the chargeout side her door and this morning the 47-year-old is suing the victim's boyfriend who fired shots through the door thinking that the police were thieves. The police officer who was seriously wounded is now suing Taylor's boyfriend, Kenneth walker, accusing him of battery, assault and intentional emotional distress. It was in the middle of the night on March 13th and the officers say they loudly announced themselves before trying to break into the apartment with a Roh knock warrant but walker who is a legal gun owner told investigators that he and Taylor asked who was at the door several times and heard no answer. And that he only fired a shot when he saw the door break open. In this countersuit Mattingly says that he nearly died and needed five hours of surgery and that walker acted recklessly in firing his pistol in the direction of the police officers who were serving a search warrant and his conduct was outrageous, intolerable, and offends all accepted standards of decency and morality. You were called racist. Are you racist? No. Not at all. But I mean I was a victim in this as well. My family has been a victim in this. They have had to go in hiding and have had death threats. Reporter: In exclusive interview with ABC news and the Louisville courier-journal last week he says he believes walker deserves some of the blame for his girlfriend's death. The impossible situation that Kenneth walker put her in in that hallway with this narrow hallway shooting from it, him diving out, I'm assuming she was trying to follow him in the room. I don't know THA for sure. But that's what makes sense. He put her in an impossible situation. Do you feel Kenneth walker is responsible for her death. I think there's a few meme reble. I think he is. Reporter: Walker filed his lawsuit against police in September, criminal charges against him were drawned with prejudice which means he could still be charged again. The charges brought against me were meant to silence me and cover up breonna's murder. For her and those I love I can no longer remain silent. Reporter: Walker's attorneys say they're shocked and this is the late nest a cycle of police aggression, deflection of responsibility and obstruction of the facts. The counterclaim just bringing it full circle. If Kenny can be sued for defending himself make no mistake, all lawful gun owners' rights are at risk and that should scare everyone. Walker isn't the only person who says he didn't hear police announce themselves this. Was an apartment complex and there were other neighbors who say they didn't know that these were the police either. This is an unfortunate and tragic case that will now drag through the courts. Cecilia. Certainly is. Okay, Steve, thank you so much.

This transcript has been automatically generated and may not be 100% accurate.

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