A Mattapan man has been indicted on a first-degree murder charge for allegedly stabbing a 19-year-old man to death in early January, Suffolk County prosecutors said.

William Earl, 20, was arraigned Thursday in Suffolk Superior Court in connection with the Jan. 9 fatal stabbing of Samuel Constant in West Roxbury. The slaying was Boston’s first homicide of the year, said Suffolk District Attorney Daniel F. Conley’s office.

Clerk Magistrate Gary Wilson ordered that Earl continue to be held without bail. Earl was arrested last month and arraigned in West Roxbury District Court. The indictment moved the case to Superior Court, where the case will be tried.

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On the day of the killing, Constant’s girlfriend allegedly arrived at her apartment to find her boyfriend and Earl, whom she did not know. Constant and Earl engaged in a physical fight after Earl pulled out a knife and repeatedly stabbed at Constant, who tried to dodge the blade, prosecutors said in a statement.

Earl allegedly ran from the apartment, and Constant chased him onto Margaretta Drive.

During the fight, Constant suffered multiple stab wounds that pierced his lung and an artery. He collapsed in a parking lot and died, prosecutors said.

A Longwood Security officer found Earl and apprehended him. He was transported to Brigham and Women’s Hospital for treatment.