While Trump was speaking, noises were heard before people started screaming and security rushed in to shield Trump.
Trump was showing off a chart of border crossing numbers when bangs started ringing through the crowd. Trump could be seen reaching with his right hand toward his neck. There appeared to be blood on his face.
He quickly ducked behind the riser as agents from his protective detail rushed the stage and screams rang out from the crowd. The bangs continued as agents tended to him on stage.
His motorcade has left the venue. His condition was not immediately known.
As he was escorted off the state by Secret Service agents, Trump held his fist in the air as chants of “USA! USA!” echoed through the crowd.
Police began vacating the fairgrounds shortly after Trump left the stage.
The U.S. Secret Service and other law enforcement agencies did not immediately respond to messages.
Leaving Mass in Rehoboth Beach, President Joe Biden simply responded, “No,” when asked if he’d been briefed about the incident.
“Praying for President Trump and everyone at the rally in Pennsylvania. May God watch over them all,” Senator Tim Scott tweeted.
This is a developing story. Check back for updates. The Associated Press contributed to this report.