JERSEY CITY, NJ (VINnews) – Detective Joseph Seals, the first victim in Jersey City’s mass shooting Tuesday, was meeting a confidential informant at Bayview Cemetery, right before he encountered a stolen U-Haul van.

PIX-11 TV News, reports, that investigators have solved the mystery of why Seals, 39, was in the cemetery that day.

They’ve learned he was meeting an informant connected to one of his gun or narcotics cases.

The meeting was not tied to shooting suspects David Anderson and Francine Graham, who apparently ambushed the detective when he approached the van.