Steve McNair was killed by his 20-year old girlfriend.
Nashville Police Chief Ronal Serpas disseminated that information to the media at a press conference on Wednesday.
"After nearly four days of intensive investigation, we have determined that Steve McNair was murdered by Sahel Kazemi and Sahel Kazemi killed herself. The totality of the evidence clearly points to a murder-suicide."
The shell casings and bullets from the gun Kazemi had recently purchased matched those found at the scene. A medical examiner found gun powder on her finger prints.
McNair did not have any defense wounds. Thus police believe he was sleeping on the sofa when he was first shot. Kazemi shot him in the chest, then the head, before killing herself.
Serpas told the press that Kazemi had been contemplating the murder. She told friends she was thinking about ending the whole thing. She had recently learned McNair was involved with another woman.
McNair was 36. His wife, Mechelle, told a source earlier in the day that she did not know about Kazemi and McNair’s relationship.