Two teams NYPD detectives headed to Las Vegas Tuesday, to execute search warrants at Shane Tamura's home and at a gun store where he legally purchased a revolver on June 12 using a Nevada concealed carry permit,

Multiple casualties as gunman opened fire in the lobby of the midtown Manhattan building on Park Avenue that is home to the Blackstone investment firm and other corporations before moving to other floors.

Shane Tamura is suspected of shooting four people in Midtown Manhattan, where the NFL offices are. A note he left references the NFL and CTE.

Four people — including two Jewish women — were killed during a mass shooting at 345 Park Avenue in Midtown Manhattan on Monday. The gunman, 27-year-old Shane Tamura of Las Vegas, entered the lobby with an assault rifle and opened fire before killing himself on the 33rd floor. Authorities say he may have been targeting the NFL offices.

Mayor Adams told ABC News that President Donald Trump called him and expressed his condolences and praised the NYPD's response. Adams commended the officers who entered the building during the active shooter situation.

The gunman in the deadly Midtown Manhattan shooting, Shane Tamura, wrote about the brain disease CTE in a note obtained by investigators.

A note written by the shooting suspect was found at the midtown Manhattan office building scene where he killed four people, including an NYPD officer, and himself a day ago, officials familiar with the investigation said overnight.

NEW YORK (AP) — At least two people, including a New York City police officer, were shot Monday in a midtown office building that houses some of the country’s top financial firms and the National Football League, a person familiar with the matter told The Associated Press.