Trump rally attendees react to shooting: "I thought it was firecrackers"

Eyewitnesses at a rally of former President Donald Trump's described a chaotic scene on Saturday after he was rushed off stage with blood visible on his face after shots were fired. 

The Secret Service issued a statement that Trump is safe, while the campaign said the former president is "fine." His campaign says he is being checked at a local hospital. The person believed to be the shooter is dead, a law enforcement official said. One spectator was killed, and two spectators were critically injured, a spokesperson for the U.S. Secret Service said in a statement.

Reporters on the scene in Butler, Pennsylvania heard between eight and 10 popping sounds, prompting rallygoers and others to get down and take cover. Secret Service officers immediately swarmed the former president, and blood was visible on the risers to the left of where Trump had been standing.