CBS News revealed new information about the death of former NFL QB Steve McNair on Monday that the network said raises questions about investigators' presumption that McNair's girlfriend, Sahel "Jenny" Kazemi, killed him in a murder-suicide. CBS reported that Nashville police cited an incorrect time line of Kazemi's whereabouts when they said she purchased the gun they say she used to kill McNair and herself two days before the shooting. Police claimed that Kazemi was absent from work for a two-hour stretch on the evening Thursday, July 2, during which she bought the gun but CBS said that Kazemi's two-hour absence from work actually occurred on Wednesday, hours before she was arrested for suspicion of DUI with McNair as her passenger. "There are a bunch of inconsistencies that would cause me to go back and investigate it further," Private investigator Wayne Black told CBS.