Boston police homicide detectives are investigating the circumstances surrounding the death of a 3-year-old child on Tuesday.
Officers responded to a report that a 3-year-old had gone into cardiac arrest at 9 Hannon St. in Boston’s Mattapan neighborhood just before midnight, Boston Police Spokesperson Mark Marron said in an email. At the scene, officers were informed that the child had been taken to a hospital. They then responded to the hospital, where they learned that the child had been declared dead…