Former President Bill Clinton released a statement on X stating "violence has no place in America."

"Hillary and I are thankful that President Trump is safe, heartbroken for all those affected by the attack at today’s rally in Pennsylvania, and grateful for the swift action of the U.S. Secret Service," he said.

One rally spectator was killed and another was injured during the incident, Butler County District Attorney Richard A. Goldinger told ABC News.

"The second individual who was removed is in serious condition," he said.

Goldfinger said the suspected shooter was on an adjacent roof outside of the rally. He was not sure how the shooter was taken down.

President Biden condemned the shooting at the Trump rally and called on other Americans to do the same.

"The idea that there's political violence or violence in America like this, is just unheard of. It’s just not appropriate," he said at a news conference.

Biden said he was trying to get ahold of Trump, who he called Donald, on the phone and wanted to talk to him.

"There is no place in America for this violence. It's sick," he said.

Security is being increased across New York City following a possible assassination attempt on former President Donald Trump, officials said.

Out of an abundance of caution, the NYPD is increasing its presence across the city, including at Trump Tower, 40 Wall Street, Foley Square and City Hall.

There is no threat or connection to New York City at this time.

"Whatever your politics, we should all be able to agree that violence is wrong and we should be able to disagree peacefully," Mayor Eric Adams said in a statement.