UPDATE 3-Six dead, including a cop and 2 suspects, in New Jersey shooting

Six people, including a police officer and two suspected gunmen, were killed in an hours-long shootout that unfolded on Tuesday afternoon near a cemetery and a kosher grocery store in Jersey City, New Jersey, police said.The two suspects killed acted alone, Jersey City Police Chief Michael Kelly told a news conference hours later in the state's second-largest city, which sits directly across the Hudson River from Manhattan.The two gunmen and three civilian victims were pronounced dead inside the