Authorities can't say if there was a particularly good reason why police arrested Gray. According to the city, an officer made eye contact with Gray, and he took off running, so they pursued him. Though he'd had scrapes with the law before, there's no indication he was wanted at the time. And though he was found with a switchblade, Mayor Stephanie Rawlings-Blake said, We know that having a knife is not necessarily a crime.
The police say Gray didn't resist arrest and that officers didn't use force, which seems to be mostly corroborated by video shot by bystanders. Gray seems to shout in pain, and his leg seems injured as officers drag him to a police van. (Someone off camera shouts, "His leg broke and y'all dragging him like that!") Gray also had asthma and requested his inhaler, but didn't get it. Yet it's not the leg or the asthma that killed him. Instead, it was a grave injury to his spinal cord. Gray's family said he was treated for three fractured vertebrae and a crushed voice box, the sorts of injuries that doctors say are usually caused by serious car accidents. The van made at least two stops before reaching the police station, but there's no footage to say what happened during the journey or at those stops.