Video appeared to show blood on his ear as he was taken away. The former president appeared to be clutching the side of his head as he fell to the ground.
The US Secret Service said Trump was now “safe” and that it had implemented protective measures around the former president.
It also said that an investigation had been launched – but did not give any further details.
“This is now an active Secret Service investigation and further information will be released when available,” Secret Service spokesperson Anthony Guglielmi said in a post on X.
The White House said President Joe Biden had received an “initial briefing” on the incident.
Republican senator for Ohio, J.D. Vance, said in a post on the X social media platform: “Everyone join me in praying for our President Trump and everyone at that rally. I hope everyone is ok.”
House Democratic Leader Hakeem Jeffries said: “My thoughts and prayers are with former President Trump.
“I am thankful for the decisive law enforcement response. America is a democracy. Political violence of any kind is never acceptable.”
Israel’s president, Benjamin Netanyahu, also shared a post on X: “Sara and I were shocked by the apparent attack on President Trump. We pray for his safety and speedy recovery.”
