Bird, a second-round draft choice of the Celtics in 2017, signed a two-year contract with the team this summer after splitting his rookie season between Boston and the Maine Red Claws of the G-League.
''Jabari Bird is currently being guarded by the Boston Police at a local hospital for an evaluation after a domestic incident that occurred in Brighton on Friday,'' the department said in a brief statement Saturday. ''The victim involved in the incident was also transported to a separate hospital for treatment of injuries sustained.''
Police said complaints would be sought against Bird for assault and battery, strangulation and kidnapping. He could be arraigned as early as Monday in Brighton District Court. Brighton is a neighborhood of Boston.
No other details were immediately released.
''We are aware of the incident involving Jabari Bird and are taking it very seriously,'' the Celtics said in a statement on Saturday. ''We are actively gathering information and will reserve further comment at this time.''
A message left with Bird's agent, Aaron Goodwin, was not immediately returned.
Bird, 24, played his college basketball at California where he earned All-Pac-12 Honorable Mention honors and led the Golden Bears in scoring in his final season at the school.
He appeared in 13 regular-season games for the Celtics last season, averaging 3.0 points per game.