A witness at the shooting incident following Michael Vick's 30th birthday party told the NY Post that it all started when Quanis Phillips, a former co-defendant with Vick in the dog fighting case, showed up to the party.
Phillips, who is not allowed to associate with Vick, mingled as if he were an invited guest to the party until Michael and Marcus Vick spotted him and "told him to get lost", the NY Post reports.
This upset him and he slapped a piece of cake off of a woman's plate hitting Michael in the face with frosting.
"Michael didn't react. I was surprised," a witness at the bash said.
"But Marcus was the one who reacted. He had this I-can't-believe-this-just-happened, we've-been-disrespected look on his face. He was very agitated."
Phillips "left the party screaming" until shots were heard in the parking lot.
The NFL has said they're in the fact-gathering stage while police have said Michael Vick is not a suspect.