No motive has been announced. A suicide note was found expressing grievances with the NFL and saying Tamura suffered from CTE, a source said. Follow for live updates.

The man who opened fire in a Midtown Manhattan office building, killing four people and wounding a fifth, appeared to be targeting the NFL headquarters and had a note claiming he suffered from CTE, police sources told ABC News.

The alleged gunman at a shooting rampage in a midtown Manhattan office building was identified as 27-year-old Shane Tamura, of Nevada.

Trump took to social media to weigh in on Jessica Tarlov after she named what wouldn't be "a bad thing to do" following the Manhattan massacre.

NYC Mayor Eric Adams shared new details about the deadly Midtown Manhattan office shooting, including a possible NFL connection and the gunman's cross-country journey.

The Rudin family, which owns the building and Rudin Management, said in a statement that one of their employees was a victim of the shootings but did not disclose the person’s name at the request of relatives. Police officials said a woman was found dead on the building’s 33rd floor in Rudin’s offices.

Baltimore Ravens head coach John Harbaugh commented on the shooting that killed four people inside a New York City building that houses the NFL headquarters.

Ivory Bridgewater faces one count of first-degree assault after allegedly shooting his ex-girlfriend’s friend in a bar parking lot.

Three men who were involved in a shooting on the top floor of a parking garage near Fort Lauderdale beach last month that injured three people were recorded on surveillance video but have not yet

New York City has some of the toughest gun laws in the nation. But Monday’s mass shooting showed their limits, security experts said.