Police said they believe there were at least three shooters: a 15-year-old, an acquaintance who died at the scene and "at least one other unknown suspect."
Dozens of suspects are now under arrest and accused of terrorizing neighborhoods across Brooklyn.
The 7-month-old was shot and killed on Moore and Humboldt Streets in East Williamsburg while her family was out for a walk.
The 20-year-old mother of two is terrified, heartbroken and overwhelmed after her infant daughter was struck by a bullet.
Bronx DA Darcel Clark is calling for changes in how young criminals are prosecuted.
Alleged gang members who were hunting rivals and protecting territory for the better part of a decade are now involved in a major indictment.