CBS Report: Police Account of Steve McNair Death Doesn't Add Up

The law enforcement investigation of the deaths of Steve McNair and his girlfriend, Sahel Kazemi, concluded that Kazemi shot and killed McNair before committing suicide. But a new investigation from CBS News raises serious questions about whether the police properly investigated the incident, and whether they may have reached the wrong conclusion.

On Monday's Early Show, correspondent Armen Keteyian reported that his own three-month investigation (video after the jump) found errors made by the police, including a major one about when Kazemi supposedly bought the murder weapon. Police claimed that they had pinpointed the time when Kazemi bought the murder weapon as during a two-hour period when she was absent from work. But Keteyian reported that the police were wrong about the date on which Kazemi was gone from work for two hours, and that there are major questions about whether she purchased the gun at all.

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And while police say Kazemi was distraught about being broke, CBS obtained her bank statement and other information about her finances and found that she had more money on hand than she owed in bills. Police also said Kazemi was angry about having been arrested for DUI, but CBS uncovered video footage showing Kazemi at the police station after her arrest, and she doesn't look distraught.

On Tuesday, CBS is promising to reveal a "big" mistake that the police department made in the investigation. Keteyian's reporting has already revealed enough to make me think the police have a lot of explaining to do.