UPDATE: Cali Swag District's M-Bone Shot Over Twitter Beef With New Girlfriend's Ex?

It's possibly turning out to not be a random drive-by shooting afterall.  After Cali Swag District's M-Bone was shot and killed Sunday night, reports said it was likely a random act of violence.

But now that M-Bone was found to be driving the car of his girlfriend, whose ex he was at war with on Twitter, signs are pointing to murder.  Updates when you read on....

TMZ reports M-Bone and a girl--who wants to remain anonymous because she's scared of being found out--had recently started dating.  She told the site that her ex-boyfriend, who she had lived with for 1 year--was known to be jealous and hostile toward M-Bone and Cali Swag District.  He even engaged in fights on Twitter with M-Bone.

M left his girlfriend's house Sunday night, using her car, in order to go to the studio to work.  The shooter drove up to the car M was standing outside of--while he was parked outside of a liquor store in Inglewood--shot at him, then made a U-turn to come back to make sure they actually landed a shot.
Story still developing....