At the scene, a small crowd watched as police investigated the incident.
Highway patrol looked over the little boy's stroller and the child's coat.
The details surrounding the hit and run are heartbreaking.
"The kid was trying to cry, but it looked like he was struggling," said Joe Chajmoeicz, a witness.
Members of a volunteer ambulance service worked to help the little boy before rushing him to Bellevue Hospital in critical condition.
According to witnesses and police, the 2-year-old was being pushed in the stroller by his 13-year-old sister.
When they got to the intersection of Kent and Flushing Avenues, a vehicle turning right onto Kent struck the stroller and kept going.
The boy's sister was not hurt.
Samuel Gillig is with the neighborhood's safety patrol.
"The only thing somebody saw was a 15-passenger van," Gillig said.
Police have not yet released a description of the vehicle they are looking for.
They're canvassing the neighborhood for surveillance video and questioning witnesses.