New Witness in 2010 Death Initially Ruled 'Suicide'

Experts now suggesting Michelle O'Connell's death could have been consistent with a homicide.
2:15 | 09/03/14

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Transcript for New Witness in 2010 Death Initially Ruled 'Suicide'
the family's crusade to prove a young Florida woman was murdered by her boyfriend who is a sheriff's deputy. Michele O'Connell's death four years ago was ruled a suicide but now her family says it has a new witness who backs up their claims she was killed. ABC's Matt Gutman has that story. Reporter: This morning, friends and family members of a young Florida mother demanding a new investigation into how 24-year-old Michele O'Connell died. On behalf of the O'Connell family we're asking for a coroner's inquest. Reporter: A new witness coming forward on the fourth anniversary of her death. Saying her then boyfriend, jeerm economy banks, a local sheriff's deputy, came to his bar the night after she died making some unsettling remarks. He told me that all she ever did was let him down and make him feel bad about himself. Was going to be moving on and with his life and he wasn't going to let her hold him back anymore. Reporter: In a sworn affidavit Danny Harmon stating I believe that Jeremy banks had something to do with miss O o'conne O'Connell's death. It was initially ruled a suicide but experts later suggesting her death could have been consistent with a homicide. The facts didn't add up and we know Michelle as an individual that would never leave her daughter ever without a mother. Reporter: O'Connell's body discovered by banks the night of her death. He was the one who dialed 911. Hey, please get someone to my house. What's going on? Please, my girlfriend, I think she just shot herself. She what? She shot herself, please. Reporter: The weapon involved in her death, his department issued gun. No one has ever been arrested in the case. Banks' attorney deny the bar owner and he ever spoke after the death. My client wasn't any P where near that place the night after her death. The facts demonstrate this was a self-inflicted gunshot wound. Reporter: Without any answers, O'Connell's family still searching for closure. Michelle counted to our family. She played a role. Reporter: For "Good morning America," Matt Gutman, ABC news, New York.

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

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