On 1 December 2009, 22-year-old nursing student Kwame Dancy was gunned down in cold blood in Harlem, New York City. A shotgun blast blew through his neck, killing him instantly.
The alleged perpetrator? Childhood friend Jameg Blake, also 22, who'd grown up on the same floor of a high-rise apartment block as the victim.
The evidence? A number of aggressive Twitter messages, including one sent by Dancy just hours before the shooting in which he taunted Blake with the tweet: "Niggas is lookin for u don't think I won't give up ya address for a price betta chill asap!"
Dancy's mother, Madeline Smith, told the New York Daily News: "That's not a reason to shoot somebody. It's crazy. I don't know what's going on with that Twitter thing."
Of course, the two had a history - reportedly to blows last summer over a woman.
Pending trial, Blake is being held without bail and has so far denied murder - indeed he pleaded not guilty at a preliminary hearing last Wednesday.
Still, Dancy's mother seems convinced NYPD have found her son's killer. "They were good friends, that's the sad part about it," she told the Daily News. "Obviously, I didn't know him like I thought I did. I just want to ask him: 'Why? How could you?'
"They've been friends since they were kids. Kwame would often try to help when [Blake] was going through stuff - and this was his thank you?
"We'll never know how far [Kwame] would have gone. His dreams were snatched from him, over foolishness."