The Brief

NEW YORK - The man behind Monday’s deadly shooting at a Midtown Manhattan office building has been identified as 27-year-old Shane Tamura, who authorities say drove cross-country from Las Vegas before opening fire inside 345 Park Avenue.

"He came from Las Vegas to New York City to do harm," New York City Mayor Eric Adams told Good Day New York.

Adams also said that the gunman was apparently trying to target the headquarters of the National Football League but took the wrong elevator.

Four people were killed, including three civilians and an NYPD officer , while a fifth victim, believed to be an NFL employee, remains in critical condition.

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What happened at 345 Park on Monday?

What we know:

The gunman, Shane Tamur

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