Donald Trump’s campaign says he is “fine” after what law enforcement officials are calling assassination attempt during a rally in Butler, Pennsylvania. Officials said the man who opened fire was a 20-year-old from Pennsylvania.

In a social media post, Trump said he was “shot with a bullet that pierced the upper part of my right ear.” The former president was quickly whisked from the stage by Secret Service agents, his ear covered in blood.

“In this moment, it is more important than ever that we stand United, and show our True Character as Americans, remaining Strong and Determined, and not allowing Evil to Win,” Trump said in a post on his Truth, social media platform Sunday. “I truly love our Country, and love you all, and look forward to speaking to our Great Nation this week from Wisconsin.”

A prosecutor said the suspected gunman and at least one attendee are dead, and the Secret Service said two spectators were critically injured.

The gunman has been identified as Thomas Matthew Crooks of Bethel Park, Pennsylvania.

An FBI official said late Saturday that investigators had not yet determined a motive. Two spectators were critically injured, authorities said.

Relatives of Crooks didn’t immediately respond to messages from The Associated Press. His father, Matthew Crooks, told CNN late Saturday that he was trying to figure out “what the hell is going on” but wouldn’t speak about his son until after he talked to law enforcement.

President Joe Biden and political leaders of all stripes condemned the attack. “There’s no place in America for this type of violence,” Biden said. “It’s sick. It’s sick.”

“Thank you to everyone for your thoughts and prayers yesterday, as it was God alone who prevented the unthinkable from happening,” Trump said in his post Sunday. “We will FEAR NOT, but instead remain resilient in our Faith and Defiant in the face of Wickedness.”