They were hit near Glenwood Road and Nostrand Avenue.
A vehicle is believed to have lost control and drove onto the pavement in front of a group of shops.
There have been warnings on Twitter that the collision has caused traffic to build up in the area.
Total Traffic NYC said: “Serious accident in Kings on Nostrand Ave NB south of Ave D.
“Stopped traffic back to Flatbush Ave, delay of 15 minutes for traffic.”
More to follow…