it shocked even the most hardened of police here. but the surprise started to wear off as investigators looked closer at one of the alleged shooter's twitter accounts. just three days before the shooting, edwards posted that he and his friends were ready to take some lives. back in april, he tweeted, 90% on white people are nasty. michael jones told police they tossed the gun at an apartment complex in town, but when police searched for it, it was gone. they did find ammunition hidden under the hood with a shotgun tucked away under the spare tire. >> randi kaye joins us live from duncan, oklahoma. randi the suspects, the teenagers, what have you learned about them on the ground there? was there a motive here? it totally random? >> reporter: it seemed to be random. they looked to have fun and in their eyes, it meant killing