"We could see the van moving through Jersey City streets slowly. The perpetrator stopped in front of there, calmly opened the door with two long rifles -- him and the other perpetrator -- and began firing from the street into the facility," Fulop said.
Shea said: "We now know this did not begin with gunfire between police officers and the perpetrators and then moved to the store. It began with an attack on the civilians in the store."
"That was their target and they intended to harm people inside there," Shea said.
-CNN