A suspected gunman who opened fire during a rally Saturday in Butler, Pennsylvania, for former President Donald Trump is dead, the Butler County District Attorney said.

Butler County District Attorney Richard Goldinger told CBS Pittsburgh that two people are dead — the gunman and an audience member. No further details were immediately provided. 

Two law enforcement sources also told CBS News that the suspect is dead. 

Several shots rang out while Trump was speaking on stage. The former president immediately touched his ear and crouched to the ground. He was rushed out and the Secret Service later confirmed that he was safe.

Authorities did not immediately disclose if any others were injured. Rep. Mike Kelley of Pennsylvania, who was standing backstage watching Trump speak, told CBS News, “I believe a lady who was next to me was hit, other people were hit.”  

This is a developing story and will be updated.