Trump shooting updates: Shooter flew drone near site hours before shooting

The Trump campaign released a statement indicating the former president will be attending the Republican National Convention in Milwaukee next week.

"As was communicated earlier this evening, President Trump is doing well and grateful to law enforcement and first responders for their fast action," the campaign said.

"President Trump looks forward to joining you all in Milwaukee as we proceed with our convention to nominate him to serve as the 47th President of the United States," they added.

-ABC News' Lalee Ibssa

Trump's son Eric told ABC News that his father is the "toughest man I have ever met" without elaborating on the former president’s condition.

-ABC News' John Santucci

Ivanka Trump released a statement on X thanking supporters for their thoughts and prayers for her father and the victims of the shooting.

"I am grateful to the Secret Service and all the other law enforcement officers for their quick and decisive actions today. I continue to pray for our country. I love you Dad, today and always," she said.

One spectator was killed and two were critically injured during the incident at the Butler, Pennsylvania, Trump rally, the Secret Service said in a statement.

"US Secret Service personnel neutralized the shooter, who is now deceased. US Secret Service quickly responded with protective measures and the former president is safe and being evaluated," the agency said in a statement.

-ABC News' Luke Barr