Shane Tamura, the shooter behind the deadly rampage in Midtown Manhattan,​ was apparently targeting NFL offices, NYC Mayor Eric Adams says.

The 27-year-old man who shot and killed four people at a Midtown office building on Monday carried a note in his pocket, police sources told ABC News.

Shane Devon Tamura fatally shot four people, including an NYPD officer, in midtown Manhattan's 345 Park Avenue before killing himself, officials said.