take a listen. >> last night, he said that he was -- they were listening to travis scott and the person in front of him had passed out and once the person in front of him passed out, all these people just started pushing so he was on the bottom of a pile. he said it felt like 800 to 900 pounds was on him. he couldn't get up. he said he was blacking in and out of consciousness but by some way, somebody pulled him out. >> reporter: now, there are some key details that investigators are trying to find out and they've shed a little light into what they are potentially looking into. we heard from the police chief earlier today who shared that there were rumors going around, at least through that crowd or the people that they have spoken to, about potentially some tainted drugs being used by concert goers there. they were trying to find out more information about that. also, of the 17 people who were hospitalized, we know that 11 of them were being treated for