Jersey City Shooting: What We Know So Far

One suspect was linked to the Black Hebrew Israelites.

The authorities identified David Anderson, 47, and Francine Graham, 50, as the attackers.

Mr. Anderson had expressed anti-Semitic and anti-police views online, and investigators said they believed that the attack on the market was fueled by those sentiments.

According to an official, Mr. Anderson appeared to have a connection to the Black Hebrew Israelite movement, which is listed as a hate group by the Southern Poverty Law Center. The movement has no connection with mainstream Judaism.

He and Ms. Graham are also suspects in a recent killing in Bayonne, N.J., according to officials.

Surveillance footage showed that the market was targeted.

The store was part of a budding ultra-Orthodox Jewish neighborhood. Jersey City’s mayor, Steven Fulop, said the footage showed the attackers driving slowly toward the market.

“The perpetrators stopped in front of there and calmly opened the door with two long rifles,” he said.

In New York City, a unit will target far-right and extremist hate groups.

Across the Hudson River, Mayor de Blasio announced yesterday that the New York Police Department had formed a new unit within its intelligence division, known as Racially and Ethnically Motivated Extremism.

The unit, which began operating this month, is primarily tasked with investigating terror threats from far-right and neo-Nazi organizations.

The Jersey City incident was a “violent, anti-Semitic hate crime,” Mr. de Blasio said.

The detective was a longtime police veteran.

Detective Seals, a 15-year law enforcement veteran and father of five, had recently been assigned to a task force focused on reducing gun violence in Jersey City, according to the city’s Police Department.