Jabbar’s north Houston home was filled with chemical residue and chemical bottles, while an inventory of items seized by the FBI — left behind by investigators who raided his house on Wednesday — included a long list of compounds used in bomb-making.

His Quran was propped atop a bookshelf, a centerpiece in his living room, and open to a passage reading, “they fight in Allah’s cause, and slay and are slain; a promise binding…”

Numerous books about Islam were also on the shelf and around the squalid home, while a prayer rug was rolled up nearby.

FBI officials on Thursday said Jabbar posted five disturbing videos on Facebook on his drive from Houston to New Orleans just hours before he unleashed carnage on Bourbon Street, leaving 14 innocent pedestrians dead.

In the first disturbing video — posted at 1:29 a.m. — the US Army veteran said he had initially planned on murdering his family and friends, but changed his mind over concerns the resulting media coverage wouldn’t focus on the “war between the believers and disbelievers,” FBI counterterrorism official Chris Raia said.

In other videos, he said he had joined ISIS “before this summer” and showed off his last will and testament.

The IT whiz was on a legitimate career path until apparently falling on hard times both personally and financially.

He contended with two failed marriages and faced mounting debt before he murdered 14 innocent pedestrians and injured dozens more with an explosive-laden Ford F-150 truck bearing the black flag of the jihadist group.

…from 2019 to 2021 he worked at EY — also a Big 4 firm — as a cloud consulting manager before landing a gig at yet another top consultancy, Deloitte, where he earned a salary of $125,000.

His first wife — from whom he separated in 2012 — got custody of the couple’s children, while he was ordered to pay child support.

He remarried in 2017, but three years later his second marriage hit the skids, his ex was granted a restraining order which prohibited Jabbar from sending her obscene or threatening messages, threatening “bodily injury” to her or the couple’s child, the outlet reported.