Lenox Ramsey, 19, was awaiting charges Wednesday after he allegedly accosted his estranged wife on a Brooklyn street and shot her repeatedly.
The New York Post said the incident Tuesday began during a loud argument outside Medgar Evers College.
Police told the newspaper Ramsey allegedly tried to drag the 22-year-old victim into a cab, but two drivers refused to pick them up. Ramsey then allegedly pulled her past onlookers into the deli.
"She was asking for help, and no one was trying to help her," said Arafat Aljamal, who works at a nearby grocery store.
The Post said one witness did try to intervene, but Ramsey reportedly pulled a gun that caused everyone to back away. He then allegedly shot the woman in the arm and back and fled the scene.