A gunman who killed four people in a New York office block was trying to target the headquarters of the NFL but took the wrong lift, the city’s mayor has said.

Eric Adams said it’s believed the attacker was trying to get to the NFL (National Football League) offices after shooting several people in the building’s lobby.

Shane Tamura, from Las Vegas, accidentally entered the wrong set of lifts, the mayor said.

“We have reason to believe that he was focused on the NFL agency that was located in the building,” Mr Adams told MSNBC.

A police officer, Didarul Islam, was among those killed on Monday. He was married with two children with another on the way.

Sky’s partner network NBC News reported a note was found in which the suspect expressed anger at his mental illness potentially being linked to him having played American football.

New York’s police commissioner said yesterday he had a “documented mental health history”.

The shooting happened at 345 Park Avenue – a skyscraper in Manhattan that also houses firms including investment firm Blackstone and KPMG.

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