The rookie cop who shot and killed an unarmed man in a Brooklyn housing project stairwell last month allegedly chose to text his union representative before calling for help for the victim, according to anonymous sources with knowledge of the investigation.

The Daily News has published a damning report quoting sources who say Officer Peter Liang and his partner Shaun Landau were "incommunicado for more than six and a half minutes" right after the fatal shooting of Akai Gurley. During that time, the cops’ commanding officer and an emergency operator tried to contact them, but couldn't reach them.

"That’s showing negligence,” one source told the tabloid. "The guy is dying and you still haven’t called it in?" To add to the muddle: the source told them the officers weren't even sure of what the exact address was for the Pink Houses, where the shooting occurred.

Liang shot 28-year-old Gurley, whom NYPD Commissioner Bratton described as a "total innocent," on Nov. 20th. Gurley had entered a dark stairwell with his girlfriend at the Pink Houses in East New York shortly after 11 p.m., just as Liang and Landau were proceeding down from the landing one flight up as part of their vertical patrol. No words were exchanged between the two parties, but Liang, who was carrying a flashlight and whose gun was already drawn, fired one round, fatally striking Gurley in the chest.

The NYPD has been roundly criticized for sending rookies to do these vertical patrols, but there's one more absolutely infuriating detail from the News' source on that matter: they weren't even supposed to be doing a vertical patrol. Deputy Inspector Miguel Iglesias, then the head officer of the local housing command, had ordered them not to go inside the building. "They’ve done verticals before," a police source said of Liang and Landau. "But Iglesias’ philosophy was, ‘I want a presence on the street, in the courtyards — and if they go into the buildings they were just supposed to check out the lobby."

Iglesias was reportedly furious after the shooting, saying at one point, "I told them not to do verticals."

Gurley's funeral is scheduled for tomorrow at 11 a.m. at the Brown Memorial Baptist Church in Fort Greene; Rev. Al Sharpton will deliver the eulogy. His family spoke to the public today for the first time since the shooting.

"I would be surprised if it is not at least presented to a grand jury," Kenneth Montgomery, a lawyer for Gurley’s parents, added. "It’s a debacle and it speaks of criminal negligence." Great, a grand jury.

The fatal shooting is being investigated by NYPD Internal Affairs and the Brooklyn DA's office. A police source said last week, "This is a result of poor in-street field training; you literally had the blind leading the blind out there." It seems that despite that, at least some portion of Liang's training did kick in.