"The cops on the scene think that the bomber was trying to attach the bombs to the parked buses when a bomb detonated before he could do so."
First time I've heard anything like this tonight. This is scarry and could have been accomplished easily. I'd really like to find out more about this angle of the story.
"..parked buses .."
Elsewhere, I read that this bomb went off near where the opposing team parked their buses. It's possible that this was a very stupid prank.
Let me try and explain how OU is laid out. You come in on the east side of an oval on the street -- other side is blocked off. It is like a large area of trees, fountains, flower beds, benches to the west of the street and then it goes around Cross then in front of the Price Business School and the street comes out on the east side of Cross and west of the stadium complex. On game days, buses are parked all around this oval from buses used by the visiting teams to buses used from the malls to transport people to the game. There are quite a few buses around the new oval on game day. Attaching devices to buses and detonating when they are filled would injure a good number of people.