we do know that he received some minor injuries. there you see some of the workers throughout on the tracks trying to recreate things and get to the bottom of this investigation. we do know from the state's governor who spoke moments ago, that it appears the controls had been tampered with. whether this was a case of negligence or something else at this point, is unclear. we will be following this story and we will be right back after this quick break.

point, whether it was an intentional act or not. let's listen to what the mayor had to say as well. we got his reaction. boston's mayor to this. >> again, just a concern that a train could get away and be traveling... the first time i have heard of that. i have never heard of this before in my time in public life or before that. certainly, concerning. hopefully, there is a good answer for it. hopefully,... i mean, i don't want to say a malfunction of equipment i'm not sure. it is hard for me to comment at this point. >> christa: we do know the third rail power had been cut. as the governor put it, it had kind of coasted through several stations there. at least four of them. from what we understand. obviously, onboard. our reporters at the scene have been talking to them. saying that it was packed at the time. people were trying to break out of windows. they didn't know exactly what was happening. they hadn't been informed. we will bright back with