A suspect involved in a prolonged firefight in Jersey City, N.J., that left six people dead, including one police officer, had published anti-Semitic and anti-police posts online and investigators believe the attack was motivated by those sentiments, a law enforcement official familiar with the case told the NY Times on Wednesday. Meanwhile, in a press conference held on Wednesday morning, Jersey City Mayor Steven Fulop said surveillance footage indicated that the two shooters had targeted the kosher supermarket where most of the carnage unfolded. On Twitter Wednesday, Mayor Steven Fulop wrote that an “extensive review” of the city’s closed-circuit cameras made it clear “that these two individuals targeted the kosher grocery location” where they opened fire and sparked a gun battle with police officers. WATCH REMARKS FROM THE PRESS CONFERENCE: (YWN World Headquarters – NYC)