actually be secondary. we know the injury did occur while he was in their custody and what police did when they you knew he was in some way suffering, in some way asking for help that's where this criminal investigation -- that's what that boils down to. >> do we know when the injury happened? we know what we saw on the videotape. we see him sort of being dragged. it's unclear if the injury had happened before he goes into the van. do we think it took praiselace inside the van? >> we've been reporting on this for almost two weeks and we have a witness who told thaws whatus that what may be the key moments is what i call the second stop. what happens is they chase him down, they put him on the ground handcuff him, search him, drag him as everybody has seen and put him in the van the first time. as he gets into the van, he seems to be under his own power. then they go up the block a bit and they stop and take him out of the van and they put him on the pavement to put leg irons on