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Jersey City Shooting Live Updates: 6 Killed, Including an Officer: Two shooters opened fire on Tuesday afternoon at a kosher market.

The dead included three people in the market as well as two suspected shooters, officials said. The slain police officer, Detective Joseph Seals, 40, was a longtime veteran with the Jersey City Police Department, according to Chief Mike Kelly.

Officials believe the shooting began when the detective approached one of the gunmen at a nearby cemetery in connection with a homicide investigation and was shot dead, according to a person with knowledge of the matter.

The gunmen then fled in a truck and eventually ended up at the kosher market, where they opened fire on police officers and civilians, officials said. For much of the next hour, residents nearby — and blocks away — could hear rapid bursts of gunfire echoing off the low buildings.