Nashville police spokesman Don Aaron identified the woman as Sahel Kazemi, whom he called a "friend" of McNair's. She had a single gunshot wound to the head.
Career Notes
Steve McNair was drafted third overall by the Houston Oilers in 1995 and last played for the Ravens in 2007. Here's a look at the quarterback's 13-year NFL career:
• Honored as three-time Pro Bowler
• Shared league's MVP award with Peyton Manning in 2003
• Led Tennessee to Super Bowl XXXIV, the only such appearance in franchise history, where the Titans lost to the Rams 23-16
• Joined Fran Tarkenton and Steve Young as the only players to pass for 30,000 yards and rush for 3,500 yards
Police said the 36-year-old McNair was found on the sofa in the living room, and Kazemi was very close to him on the floor. Aaron said the gun was not "readily apparent" when police first arrived.
Autopsies were planned for Sunday.
Aaron said McNair's wife, Mechelle, is "very distraught."
"At this juncture, we do not believe she is involved," he said. "Nothing has been ruled out, but as far as actively looking for a suspect tonight, the answer would be no."
Fred McNair, Steve McNair's oldest brother, said some family members likely will travel to Nashville on Monday to consult with Steve McNair's wife.
"It's still kind of hard to believe," Fred McNair said. "He was the greatest person in the world. He gave back to the community. He loved kids and he wanted to be a role model to kids."
He said he did not know who Kazemi was.
The bodies were discovered Saturday afternoon by McNair's longtime friend Wayne Neeley, who rents the condo with McNair.
Aaron said Neeley told authorities he went into the condo, saw McNair on the sofa and Kazemi on the floor but walked first into the kitchen before going back into the living room, where he saw the blood.
Neeley then called another friend of McNair's, Robert Gaddy, who dialed 911 to alert authorities.
"It was like something you might imagine seeing on TV or in the movies, but never imagine you would see it first-hand, to have that happen to someone you love," Gaddy said, according to The Tennessean of Nashville. "I am still shook up."
Police said a witness saw McNair arrive at the condo in the upscale Rutledge Hill neighborhood between 1:30 and 2 a.m. Saturday and that Kazemi's vehicle was already there.
The condominium is located within walking distance of an area filled with restaurants and nightspots, a few blocks from the Cumberland River and within view of the Titans' stadium.
"When I walked in I knew it immediately [something was wrong]," Gaddy said. "I didn't have to touch him. I called 911 and told them they needed to get there. I was holding my breath and hoping it wasn't true. I didn't want to touch him but I saw blood on my best friend and I was almost panicking myself. It looked like he was gone and I didn't want to believe it.''
Two days ago, Nashville police arrested Kazemi on a DUI charge while driving a 2007 Escalade registered to her and McNair. McNair was in the front seat, but didn't break the law and was allowed to leave by taxi.
[+] Enlarge
AP Photo/Ed RodePolice held up a sheet while taking a body out of the Nashville apartment where Steve McNair was shot on Saturday.
The arrest affidavit said Kazemi had bloodshot eyes and the smell of alcohol on her breath, but refused a breathalyzer test, saying "she was not drunk, she was high."
McNair and his family frequented the restaurant where Kazemi was a waitress, according employees and patrons of Dave & Buster's in Nashville. Keith Norfleet, Kazemi's ex-boyfriend, told The Tennessean that McNair and Kazemi met at the restaurant.
"She was reliable 90 percent of the time," manager Chris Truelove said of Kazemi. "She was pretty outgoing. A lot of the guests liked being around her, and she liked being around the guests."
Co-worker Shantez Jobe, 33, said she was friends with Kazemi.
"We talked about who had more fashion sense, and who was the cutest, and who could get more boys, you know some of the stuff girls do," Jobe said.
In June, McNair opened a restaurant near the Tennessee State University campus. It was closed Saturday evening, but had become a small memorial, where flowers, candles and notes had been placed outside the door.
On the restaurant's windows were messages: "We will miss you Steve" and "We love you Steve."
A note attached to a small blue teddy bear read, "We will never forget you, Steve. Once a Titan, always a Titan."
Steve McNair: 1973-2009
The news of former NFL quarterback Steve McNair's passing drew reaction from across the sports world. Reaction
The McNair family released this statement through McNair's agent Bus Cook: "The families of Steve McNair in Mississippi and Tennessee appreciate the concern, thoughts and prayers during this difficult time of our loss of a husband, father and son. The family requests everyone would allow them time to mourn. The McNair Family appreciates and continues to request your prayers at this time."
"We don't know the details, but it is a terrible tragedy and our hearts go out to the families involved," NFL commissioner Roger Goodell said in a statement.
McNair, a three-time Pro Bowler, led the Titans within a yard of forcing overtime in the 2000 Super Bowl, which they lost 23-16 to the St. Louis Rams. He also played for the Baltimore Ravens before retiring in April 2008.
His most noted drive, the last one in that Super Bowl, came when he led the Titans 87 yards in the final minute and 48 seconds, only to come up a yard short of the tying touchdown. Kevin Dyson caught his 9-yard pass, but was tackled at the 1-yard line by the Rams' Mike Jones.
McNair accounted for all of Tennessee's yards in that drive, throwing for 48 yards and rushing for 14. The rest of the yardage came on penalties against the Rams. Before that, he brought the Titans back from a 16-0 deficit to tie the game.
"If you were going to draw a football player, the physical part, the mental part, everything about being a professional, he is your guy," former Ravens and Titans teammate Samari Rolle said. "I can't even wrap my arms around it. It is a sad, sad day. The world lost a great man today."
McNair began his career in 1995 with the Houston Oilers, who eventually became the Titans, and finished with 31,304 yards passing and 174 touchdowns. McNair played with pain for several years, and the injuries ultimately forced him to retire.
"On the field, there isn't player that was as tough as him, especially at the quarterback position," the Ravens' Derrick Mason said. "What I have seen him play through on the field, and what he dealt with during the week to get ready for a game, I have never known a better teammate."
During a five-game stretch at the end of the 2002 season, McNair was so bruised he couldn't practice. But he started all five games and won them, leading the Titans to an 11-5 finish and a berth in the AFC championship game for the second time in four seasons.
McNair played all 16 games in 2006, his first season in Baltimore, and guided the Ravens to a 13-3 record. But he injured his groin during the season opener last season and never regained the form that put him in those Pro Bowls.
"I am deeply saddened to learn of today's tragic news regarding the death of Steve McNair. He was a player who I admired a great deal," said New England Patriots senior football adviser Floyd Reese, who was GM of the Titans when McNair played for them. "He was a tremendous leader and an absolute warrior. He felt like it was his responsibility to lead by working hard every day, no matter what."
Titans coach Jeff Fisher was out of the country, taking part in the first NFL-USO coaches tour to Iraq.
Ozzie Newsome, Ravens executive vice president and general manager, said he immediately thought of McNair's four sons.
"This is so, so sad. We immediately think of his family, his boys. They are all in our thoughts and prayers," he said "What we admired most about Steve when we played against him was his competitive spirit, and we were lucky enough to have that with us for two years. He is one of the best players in the NFL over the last 20 years."
No funeral arrangements have been made.
Ronaldo - Real dream is over
Baltimore Ravens agree to contract with free-agent receiver Kelley Washington