Go read it for the last week.
News media got it from somewhere, namely the part of the second bomb being in front of the fence when in fact it was back behind the fence next to the tree.
Whoever planted the bomb would have been in pictures anyone had, walking by or standing next to the tree not in front of the fence as they were telling people.
On Tuesday, the media said a suspect was in custody, about 20 minutes later the police said no suspect in custody.
From the video the suspects were caught on camara about 10 minutes before the blasts. There is over 100,000 people in the area where the bomb went off. They were identified in only three days.
By the way the media got the photo of the bag in front of the fence from their own footage.