Guests thought pressure cooker bomb was a hubcap

News sources report the lid of the pressure cooker bomb was located on the roof top of the Charlesmark hotel approximately 35 yards away. By now everyone who has available and working media has seen the horrific images from the bombs that exploded at the Boston Marathon.

The dailymail reported that a guest at the hotel thought it was a hubcap from a vehicle damaged in the bomb. Not long afterwards the FBI and other investigative teams questioned the man and it was deteremined it was indeed a vital clue from the terrorist who killed 3 and injured  183.
Read more: DailyMail