PORTLAND — Portland police have charged three people with robbery following their attempt to hold up a man at knifepoint over the weekend.

The victim told police he had just left Peace Food Market on Cumberland Avenue at 10 p.m. Saturday when a group of young men accosted him, and one pulled a knife and demanded money.

The group left without any money when a bystander approached, police said. Nobody was injured.

The victim was able to provide a description and officers spotted some of the suspects on Anderson Street a short while later, police said.

Police charged three males from Portland: Samater Ali, 19, Amin Mohamed, 18, and a 17-year-old.