Darren Rovell had reported that WSMV said the double homicide was actually a murder-suicide, with Steve McNair’s wife murdering him, then killing himself. Later however, he tweeted that WSMV has backed off that theory.
Steve McNair married Mechelle Cartwright in June 1997. They were sweethearts at Alcorn State, where he attended college. He was drafted number three overall in 1995.
http://www.huliq.com/3257/83086/former-nfl-qb-steve-mcnair-dead-gunshot-wound
McNair’s wife is supposedly out of town. So the shooter was either a jealous boyfriend of the dead girlfriend. Or a second jealous girlfriend.