Miami Beach Police have arrested a man they say murdered two people during a Memorial Day brawl on South Beach, and now they would like to question Bronx-bred rapper Fat Joe as a potential witness to the deadly meelee.

Fat Joe could have been hanging out with Lessli Paz of Homestead, Florida and Joey Navarro, of New York, before their early Monday morning slainings.

Paz, Navarro and several other men — possibly including Fat Joe — were in the rented black Cadillac Escalade that was parked outside of David’s Cafe II, 1654 Meridian Ave., just before 6 a.m.

That’s when a fight broke out between some people in the Escalade and another man outside the popular Cuban eatery, although police did not say exactly what sparked the fight. Detectives said it started as a “verbal altercation.”

Police say Jermaine ”Wufgang” Chamberline, 24, of Miami Gardens, pulled a gun and fired four rounds into the group.

”As the two groups began punching and kicking each other, [Chamberline] reached into his right-front pocket and pulled out a 9mm handgun,” according to an arrest report released Tuesday.

Aimee Morris, Fat Joe’s publicist, said she had not talked to the rapper and could not immediately comment. His whereabouts were not known Tuesday.