The child and their mother were struck outside of 9 Bentley Avenue around 3:30 p.m., initial reports say.
The child, believed to be 3, was reported to have suffered serious head injuries while the mother suffered leg injuries.
Neither Jersey City officials nor spokespeople for the Hudson County Prosecutor's Office could immediately confirm.
This is a developing story. Check back for details.
Click here to follow Daily Voice Fort Lee and receive free news updates.