Trump Jr. says father is 'changed man'

A Butler County resident whose house is one of the closest properties to the scene of the Trump rally shooting said she was surprised that the Secret Service did not search her home ahead of the event.

"I thought that would be something that they would do since I live so close," Carol Kerr, 82, told ABC News by phone early Sunday morning.

Kerr's house on Meridian Road is roughly a quarter of a mile from both the stage where the former president was speaking on Saturday and the location where the shooter is believed to have been firing from.

"I thought they would search the houses that are as close as mine is," Kerr said. "At least check them out and see if you have anything in your house which is dangerous, which I don't."

- ABC News' Jared Kofsky

The FBI has identified Thomas Matthew Crooks, 20, of Bethel Park, Pennsylvania, as the subject involved in the assassination attempt of former President Donald Trump on July 13, in Butler, Pennsylvania, according to the FBI.

While law enforcement said at a press conference late Saturday that they believe they know who carried out the shooting, they are still not naming the individual.

Officials said they are also doing DNA testing, because the suspected shooter did not have ID.

"It's a matter of doing biometric confirmations," FBI Special Agent in Charge Kevin Rojek said. "So, there was no identification on the individual, for example, so we're looking at photographs right now and we're trying to run his DNA and get biometric confirmation."

The shooter's name will be released once there is an official confirmation, he said.

Kevin Rojek, Special Agent in Charge, FBI Pittsburgh field office, said late Saturday: "Tonight we had what we're calling an assassination attempt on our former president, Donald Trump."

"We do not currently have an identified motive," he added.

The FBI was not prepared to release the identity of the shooter, who died at the scene.

Rojek said they received no specific threats ahead of the shooting.