David Anderson, 47, and Francine Graham,50, the shooters in the Dec. 10 mass attack at the JC Kosher Supermarket in Jersey City, also researched a Jewish Community Center in Bayonne, according to law enforcement officials.
The investigation of the two shooters, their motives, and suspected plans is ongoing.
But, said U.S. Attorney Craig Carpenito, “We know now that they planned greater acts of mayhem on both communities.”
More details of the Jersey City incident have emerged as federal and state law enforcement officials updated the public on their investigation into what the NJ Attorney General’s Office has called an act of domestic terrorism.
Surveillance video showed Anderson and Graham had “cased” the kosher market days before the attack in their rented U-Haul van at least two times before the Dec. 10 shooting.
Before the attack on the market, Anderson and Graham killed Detective Joseph Seals at Bay View Cemetery before driving a white U-Haul van outfitted with ballistic panels to the kosher store.
Seals was at the cemetery when he saw the stolen U-Haul van parked in a spot that made him suspicious. When the detective investigated, Graham and Anderson, who had been living in the van, opened fire and killed him, according to Carpenito.
“We know now that they planned greater acts of mayhem on both communities.” — U.S. Attorney Craig Carpenito
After driving a mile to the JC Kosher Supermarket at 223 Martin Luther King Drive, they parked their van, which contained five firearms, including an AR-15, a 12-gauge shotgun, a 9 mm Ruger semi-automatic, a 9 mm Glock 17, and a 22 Ruger Mark IV with a homemade silencer and homemade device for catching bullet casings.
In 2018 Anderson purchased these weapons in Ohio where he and Graham learned to use them.
The van also contained a pipe bomb that FBI Special Investigator Greg Ehrie said had enough power to injure someone up to five-football-field lengths away, as well as enough material in the van to make a second bomb.
“As best we can speculate, the reason that bomb was not used, and there was not an attack on a broader audience is because they were thrown into action with the murder of Detective Seals,” Carpenito said.
At approximately 12:21 p.m., Anderson exited the car with a long rifle and began firing on the store, at which point both Anderson and Graham entered the store.
Three citizens were killed in the attack, including Mindy Ferencz, 32; Douglas Rodriguez, 49; and Moshe Deutsch, 24. A fourth person who was in the store was shot but escaped and survived.
Carpenito also said that video from cameras inside the market that day captured Anderson speaking of his Jewish victims and of local law enforcement, stating “They stole our heritage. They stole our birthright, and they hired these guys to stop us.”
Anderson and Graham are also the prime suspects in the death of Jersey City resident and father of two Michael Rumberger, 34. He was a livery driver whose body was found in the trunk of a Lincoln Town Car near 17th Street and John F. Kennedy Boulevard in Bayonne on Dec. 7.
The two shooters harbored a hatred of Jews and law enforcement, and according to Carpenito, Anderson posted to social media calling Jewish people “imposters who inhabit synagogues of Satan” and referenced “wicked Israelites who love darkness as a cover for their wickedness.”
“This was nothing but a senseless, evil, cowardly act of anti-Semitism and hatred toward not just the Jewish community, but also law enforcement,” Carpenito said.
Authorities said evidence indicates the two suspects were acting alone and had no co-conspirators.
The investigation continues.