Officials refuse to publicly elaborate on targeting of kosher market, but investigators reportedly believe rampage was motivated by anti-Semitism, anti-police sentiment

'A growing pattern of violent anti-Semitism has now turned into a crisis for our nation,' says mayor of nearby New York City, announcing extra cops to guard Jewish sites

Ongoing investigation suggests gunmen deliberately attacked Jewish store in Jersey City; at least six dead following gun battle, including police officer

Some 100 Orthodox families moved to Jersey City neighborhood from Brooklyn over past several years; witness says wife of store owner injured in attack

No immediate word whether Jewish establishment was target of shooting; governor says officers shot as neighborhood put on lockdown