The helicopter did not have any flight recorders, officials said. The investigation into the cause of the crash, which killed six people, is continuing.
New York’s subways have been the subject of debate, with politicians using them to paint the city as out of control and dangerous to residents and visitors.
The man may be related to the girls, who all survived, the police said. An 11-year-old called 911, and officers rushed to the house in Brooklyn where the children lived.
Felipe Hoyos Foronda, who advertised cosmetic surgery services on social media, tried to flee the country after the procedure went wrong, according to an internal police report.
The victims were walking Saturday on the border of the Gravesend and Midwood neighborhoods when two cars collided and one veered into their path, the police said.
The child’s death is one of several in recent months. The medical examiner is seeking a cause as investigators look for the man and woman who left him.
The state and the correctional officers’ union agreed that officers should return to work Monday and that some provisions of a solitary confinement law would be put on pause.
The police said Emil Williams, who had been reported missing, pointed a gun at an officer before they shot him. A neighbor on Long Island said everything about him had been “normal.”