The NYC gunman who killed four last night may have been trying to target the NFL.

27-year-old Shane Tamura blamed the NFL in his suicide note but went up the wrong elevator, according to the mayor.

Here’s more from Fox News:

The gunman who stormed a high-rise building in the heart of New York City on Monday evening was trying to target the NFL’s headquarters but took the wrong elevator bank, Mayor Eric Adams said on Tuesday.

Adams appeared on Fox 5 NY’s “Good Day New York” and said the gunman, identified as Shane Tamura, accidentally entered the wrong elevator banks. He said he went to the floor where Rudin Management was located.

“It’s unfortunate that during these days and times, active shooter drills are taking place all across the country and Rudin Management did their job of clearly having those active shooter drills and the staffers who were in the building were able to utilize some of the safe rooms and I believe it played a great role in saving lives of some of the staffers,” he said.

Adams added that the gunman alluded to have suffered from chronic traumatic encephalopathy (CTE) and that he had a grievance against the NFL.

“He seemed to have blamed the NFL,” the mayor said. “The NFL headquarters was located in the building, and he mistakenly went up the wrong elevator bank.”

Adams said investigators were going through the “suicide note” the gunman left.

The New York Post first reported the notion of a “suicide note” found near his body on the 33rd floor. Fox News Digital reached out to the NYPD and the NFL for comment.

Tamura was a high school football player at Granada Hills Charter in Granada Hills, California, which is about 25 miles northwest of Los Angeles.

The NFL’s headquarters were located in the same building where Tamura had killed multiple people and left several others injured. The league’s officers are on the fifth floor.

NYC Police Commissioner Jessica Tisch said Tamura had a history of mental health problems.

Tisch said that Tamura traveled cross-country, with his vehicle last being seen in Columbia, New Jersey as recently as 4:24 p.m. ET. That wasn’t long before he unleashed a barrage of gunfire at the high-rise building.

NFL Commissioner Roger Goodell sent a message, obtained by Fox News Digital, to all league employees announcing the traumatic event. One NFL employee was “seriously injured.”

It was reported on Fox News this morning that Tamura had prescription drugs in his vehicle and possibly marijuana. He also wrote in his suicide note that he wanted doctors to study his brain, suggesting he knew he was going to die in his rampage. Sounds like another mental case.