More bad news for Marcus Vick ... the ex-NFL QB -- and younger brother of Michael Vick -- was arrested over the weekend in Virginia on a drug possession charge.
According to WAVY-TV, cops went to Vick's apartment in Newport News on Saturday after someone complained about a marijuana odor in the area.
Police say the smell became stronger when Vick opened the door to his place ... and when cops asked if they could come inside, he said "no."
Vick was taken into custody for possession of a schedule I or II drug after officers searched the apartment.