At about 5:22 PM, on Saturday, March 30, 2024, officers assigned to District B-3 (Mattapan) arrested Omar Stephenson, 37, of Dorchester, on assault and battery charges. Officers responded to the area of 56 Dunbar Avenue for a report of a person with a knife. Officers observed two individuals running from the area, and stopped them to ascertain what had occurred. Officers were advised that the individuals were being chased by a person with a knife. Officers were told that the victims were playing basketball and were approached by the suspect who asked if he could play. The suspect began to become overly aggressive, and was asked to leave. The suspect put one of the victims in a headlock, and then released him. At this time, the suspect pulled out a knife and began to chase the victims. Officers were provided a description of the suspect, and responding officers immediately observed the suspect screaming at the basketball court. Officers quickly apprehended the suspect and conducted a pat frisk. Officers recovered a 12-inch hunting knife in a sheath, in the suspect’s waistband under his coat. Stephenson was placed under arrest and charged with assault by means of a dangerous weapon, and assault and battery. He was arraigned in Dorchester District Court.