CNN Anderson Cooper 360 April 21, 2015 00:02:00
>> reporter: leading baltimore's mayor to conclude that gray's injuries occurred not on the street but during his transport. >> it's clear that what happened happened inside the van. >> reporter: police say freddie gray was stopped on suspicion of criminal activity possibly drug related, but that doesn't explain all that happened here. cell phone video and audio on the street at the time of gray's arrest paint a disturbing picture. he's on the ground. he's screaming in apparent pain. he's being taken into custody, legs limp. a woman is describing an apparent problem with his legs. >> his leg i...