Police records, public documents and more than a dozen interviews on the streets here and in other St. Louis suburbs are beginning to reveal details of the killing and clarify points on a timeline that began with a theft of less than $50 worth of cigars from a convenience store and culminated with Brown’s death.

A key witness — Brown’s friend Dorian Johnson — has told the FBI that he thought the robbery was a “prank,” said Johnson’s attorney. In an interview with federal agents, Johnson has said Brown was hit by one bullet, then — as Brown pleaded for his life — Wilson fired “five or six” more times.

And when the shooting stopped, Johnson and his legal team have told investigators, the police officer who pulled the trigger did nothing to save the man he’d just shot. “The officer doesn’t attempt to resuscitate,” Johnson’s attorney, former St. Louis mayor Freeman Bosley Jr., said in an interview Saturday. “He does not call for medical help. The officer didn’t call it in that someone had been shot.”