A teenager was arrested after allegedly grabbing a man’s cellphone and scuffling with him on a Dorchester street, Boston police said.

A man called police at about 8:30 p.m. Wednesday to report a robbery on Kerwin Street . When officers arrived, they saw the victim had injuries to his face and nose, police said.

The man said he had been standing waiting for the bus near Talbot Avenue and Kerwin Street when a youth allegedly approached him and took his cellphone from his hand. The victim said he grabbed the youth and began to wrestle with him in an attempt to take his phone back, police said.

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The victim said both he and the youth fell to the ground. Three other males appeared and allegedly started kicking and punching the victim, police said.

The youth broke free and ran away. The three others followed, police said.

The man declined medical attention. He gave officers a description of the suspect, and said he may have torn the youth’s coat during the fight, police said.

Officers saw two young males, one with a ripped coat, walking near Norfolk and Wentworth streets. They stopped them and brought them back to the scene where the victim identified them as among his alleged attackers.

The youth who originally started the whole incident, a 16-year-old from Dorchester, was arrested and charged with unarmed robbery. His name is not being released because of his age, police said.

Peterson Saintil, 18, of Roslindale was arrested on outstanding warrants, police said.