A Boston woman is under arrest after she and an unidentified companion allegedly attacked a man who balked at buying an iPhone 5 she offered to sell through a Craigslist ad, Braintree police said.

Sukia O. Omere, 27, was arrested Sunday on charges of armed robbery, assault and battery with a dangerous weapon, larceny from a person, larceny under $250, and witness intimidation. Omere is to be arraigned today in Quincy District Court.

Braintree police said in a statement that Omere and her male companion arranged to meet a 36-year-old Quincy man who was interested in purchasing the phone Saturday night at a home on Hobart Avenue in the South Shore town, police said.

Advertisement - Continue Reading Below

Dissatisfied with the product Omere was selling, the Quincy man and his friend attempted to leave, but were allegedly threatened by Omere as they went back to their car.

Police said Omere’s companion then pulled a handgun, leading to a physical struggle. During the confrontation, Omere’s companion allegedly struck the Quincy man in the face with the butt of the gun.

Omere also allegedly took the victim’s phone, leading to the armed robbery charge, police said.

The Quincy man was taken to South Shore Hospital for minor injuries, said police.

Police found Omere by the description of her vehicle — a Land Rover — provided to police and through a check of the cellphone number the Quincy man used to call her to arrange the meeting.

Omere was arrested in Boston on Sunday at her home on Grove Street, Braintree police said. She has no known connection to Hobart Avenue in Braintree, police said.

The incident is still under investigation to identify Omere’s accomplice, police said.