Adams told reporters that investigators believe Shane Tamura of Las Vegas entered the building with the intent to reach the NFL 's offices but accessed the wrong set of elevator banks. "He seemed to have blamed the NFL ," Adams said. "The NFL headquarters was located in the building, and he mistakenly went up the wrong elevator bank."

In a press conference, New York City Mayor Eric Adams identified the slain police officer as 36-year-old Didarul Islam, who had been working with the New York City Police Department for three and a half years. One person who was wounded during the shooting remained in critical condition, Adams said.

The gunman suspected of targeting the National Football League headquarters in New York, killing four, was a former standout football player at two Southern California high schools.