While it isn't known yet what happened the increasing number of incidents of violence against the persons or property of NFL players appears to be on the rise.
Remember the murder of Washington's Sean Taylor, the drive by shooting of a Denver Broncos d'back, the shooting of a Jacksonville o-lineman, the invasion of the home of former Packer Noah Herron; just to name a few that immediately come to mind.
Maybe Plaxico Burress had a reason to be carrying a gun with him into that nightclub. Just get a permit and don't shoot yourself in the leg.
An increased issue for NFL security.