STATEN ISLAND, N.Y. -- New details unveiled by state and federal authorities in the ongoing investigation of a shooting in Jersey City reportedly showed that the man and woman who killed a veteran police officer and three people inside a kosher supermarket also had an explosive device capable of killing or injuring people five football fields from the potential blast.

Authorities said Monday that David Anderson, 47, and Francine Graham, 50 — who prepared for months before carrying out the attack and had hatred toward police and the Jewish community — placed a pipe bomb that had capabilities to maim people 500 yards away inside a rented U-Haul van , NJ.com, the Advance’s sister site reported.

In addition to the pipe bomb, a note found by authorities read: "I do this because my creator makes me do this and I hate who he hates,” according to law enforcement sources cited in the New York Post and confirmed by NJ.com.

Anderson and Graham were allegedly fueled by a radical ideology loosely affiliated with the Black Hebrew Israelites, authorities said, and the pair purchased a litany of weapons and trained to use them in Ohio. They researched another attack on a Jewish community center in Bayonne, NJ.com reported.

Less than 24 hours after the pair unleashed gunfire in Jersey City, Mayor Bill de Blasio and the NYPD publicly unveiled a unit focused on preventing hate crimes before they occur, the Advance previously reported.

The Racially and Ethnically Motivated Extremism — “REME” — unit is “focused on any trends and any signs of racially and ethnically motivated extremism,” de Blasio said at the press conference.

Amid the series of anti-Semitic attacks separated by only three weeks in New York and New Jersey, the NYPD also announced that it intends to add hate crimes to its publicly-available crime database — CompStat — for the first time since the stat-tracking site’s inception.

While Shea said the move is an important step in the department’s transparency, the availability of the data, he hopes, will also spur conversation both inside and outside of the NYPD.

“Anything to bring this to the forefront of what is going on, to get people talking about it … I think is a good idea," Shea said.