NASHVILLE, Tenn. (AP) - Tennessee's state medical examiner says
investigators have been hesitant to conclude that Steve McNair's girlfriend killed the NFL star and herself because she didn't appear to have a motive.
Bruce Levy said Tuesday that murder-suicide is the most likely scenario and it's unlikely the crime scene was staged by a third party.
But investigators have been cautious about exploring every possibility. In murder-suicides, friends and family usually have seen problems. But 20-year-old Sahel Kazemi's family has said she was very happy.
A ruling is expected in the next few days.
Police quickly labeled McNair's death a homicide. Investigators say that Kazemi bought the handgun found under her body less than two days before the shooting. Kazemi and McNair were found dead Saturday.