there are going to be people hurtt! >> we need help! we need help!come on. >> which just had an attack. >> michael: there you saw up close the horror that hand. here is what we know what right now. the explosions occurred at 2:50 pm eastern time, well after the racer's top runners had finished the marathon. police chief ed davis said there were no threats or warnings. here is one early reaction from a man who's father was injured in the explosion. >> there was police there, you know pretty quick. i don't know about medical personnel, but i'm sure trying to get through the whole crowd to get there, you know -- it's horrible and i would probably say stuff i couldn't say right now. >> michael: massachusetts governor asked the public to ur report any information they may have. >> we are asking that people stay out of crowds and calmly make their way home or if they are visiting back to their hotels. all of the hotels' security will be prioritized at the outset. >> michael: now information is still coming in, and we don't want make any assumptions about t