President Biden spoke with Trump, a White House official told ABC News.

Biden also spoke with Pennsylvania Gov. Josh Shapiro and Butler Mayor Bob Dandoy, the official said.

-ABC News’ Mary Bruce

The suspected shooter was a man and was killed by a Secret Service counter-sniper, according to a source familiar with the investigation.

His identity hasn’t been immediately confirmed.

FBI Director Christopher Wray briefed Biden and the national security adviser Jake Sullivan, according to the source.

-ABC News’ Pierre Thomas

The president will be departing from his home in Delaware and return back to the White House tonight, officials annouced.

Biden is expected to arrive at 12:30 a.m., the White House said.

The shooting at the Trump rally is officially being investigated as an assassination plot on Trump, a senior defense official told ABC News.

Early evidence indicates that there was only one shooter, according to the source.

Attorney General Merrick Garland said in a statement that the FBI; Bureau of Alcohol, Tobacco, Firearms and Explosives; U.S. Attorney’s Office for the Western District of Pennsylvania; and the Department’s National Security Division will be involved in the investigation.

“My heart is with the former President, those injured, and the family of the spectator killed in this horrific attack,” he said in a statement. “We will not tolerate violence of any kind, and violence like this is an attack on our democracy. The Justice Department will bring every available resource to bear to this investigation.”

-ABC News’ Pierre Thomas