Boy Is Found Dead in Brooklyn Detectives are investigating the death of a 23-month-old boy in Brooklyn whose bruised body was discovered after his mother called 911 early Saturday morning to say that he was unconscious and unresponsive, the police said. The boy, Jacqil Degraffenreid, had been left in the care of his mother's boyfriend for about four hours, though where the mother had gone was not immediately clear, according to a law enforcement official. It was not known if other children were present at the time. The mother and the man were being questioned on Saturday afternoon at the Sutter Avenue station house. "It's looking like it might be criminal," said the official, who spoke on the condition of anonymity because the investigation was continuing. The police said a cause of death was pending an autopsy by the city's medical examiner's office. It was about 4:30 a.m. on Saturday when the police received a 911 call from the boy's mother. Officers found the child in the family's apartment at 140 Shepherd Avenue in Cypress Hills. Emergency Medical Service workers who responded rushed him to Kings County Hospital Center, where he was pronounced dead, according to the police. The official said the mother's boyfriend had been "looking after" the boy for a time and that when the boy's mother returned home she called for help. The official said bruises found on the boy's body were inconsistent with the account that investigators were given when they asked what happened to him. It was not immediately clear if the family had had previous contact with the city's child welfare agency, the Administration for Children's Services. "A.C.S. has received a report on this terribly sad death and we are investigating," said Michael J. Fagan, a spokesman for the agency. At the family's home, on the first floor of a two-story brick townhouse, a woman declined to speak on Saturday afternoon. A uniformed police officer could be seen sitting at a table inside the apartment. A neighbor said he believed that the family had moved to the building from Queens just a week ago. He said he thought that other children lived in the apartment and that he saw them riding their bicycles in the street on Friday. At the station house, Jaquil's relatives declined to discuss the boy or what happened. Separately, a second child, Angelise Correa, 2 months old, died hours later on Saturday in the Bronx, the police said. In that case, police officers were called to a first-floor apartment at 2055 Harrison Avenue, where the girl lived with her family, at about 11 a.m., the police said. There, the girl was found unconscious and unresponsive. Emergency Medical Service workers took her to Bronx-Lebanon Hospital Center, where she was pronounced dead, the police said. The girl's death appeared to be accidental, according to the law enforcement official. As in the earlier case, the police said an autopsy by the city's medical examiner's office would determine how Angelise died.