He was removing the bombing materials from a backpack to put them in a vest and most assume to go back in as they don't pat people down, take off the vest and detonate it that way. Instead something happened and it blew up while he was sitting on the bench. The bomb had a directional device and they have found metal in the trees. There was a second backpack which Boren first said was blown up and then said it had nothing in it but that was not the facts according to sources in Norman PD. The 2nd backpack also contained a bomb.
I wonder if the trigger device was set off by any two way radios perhaps?
either way, I don't think this guy was really the planner of the event at all. Generally the planners don't plant or wear the bombs.
Would you happen to know where they found the 2nd bomb?
Thank you, BTW, for your info on this. Please add me to your pinglist if you have one on this topic.