according to wikipedia
There was something that went down with a dude out here with my middle brother, "Big Lee", and, uh, Lee went upstate for five years. [...] It was a little problem like I just said, "divide and conqueror" between the fellas
and, uh, Lee went upstate
, then I went upstate, and then [Lee] sent word to do something [to someone]. He sent word to somebody else to do something, but Lamont went with him, which he shouldn't have. [...] It didn't go down the way it should have and they seen Lamont face. So, uh, both of us is gone, and [Lamont] was out here by himself. And so you can't get one brother, you get the other one. That's it in a nutshell.
I'm not saying you're wrong. but it looks like maybe he tried to get deeply involved in the streets resulting in getting capped.
I find it extremely ironic that L was shot in the streets when he's putting out songs like All Black. He wrote some of the cockiest lines ever, it's really no surprise to me that he was shot.