Police are investigating after a woman attending the St. Louis Cardinals game at Busch Stadium on Tuesday night was grazed by a stray bullet that presumably came from outside the stadium.The 34-year old woman was sitting in her seat near the dugout when she was struck. According to the police report, the woman felt pain in her arm and noticed a small abrasion above her elbow when she removed her jacket, the St. Louis Dispatch reported. The woman went to a first aid station for treatment and contacted an off-duty police officer.Police said they found a bullet slug "in the immediate area around the victim's seat."USA Today