Emergency room doctor at Trump rally reveals how he performed CPR on a member of the crowd after shooting

• LIVE UPDATES: Crowd member believed to be dead after Trump rally shooting

An emergency room doctor at Donald Trump's rally reveals how he performed CPR on a member of the crowd after the attempted assassination on the former president.

The presumptive Republican nominee was shot in the right ear by a gunman on a roof just over 100 yards away at the MAGA event in Butler, Pennsylvania. 

He briefly bent down, then stood up, pumped his fist and chanted 'fight, fight, fight' as Secret Service rushed him off stage and into a motorcade 

'I heard the shots. I thought it was firecrackers begin with. Somebody over there was screaming 'he's been shot he's been shot,'' said the man who had blood splattered all over his white USA shirt. 'So I made my way over. I said I'm an emergency department physician. Let me help you.'

'The guy had spun around was jammed between the benches and a head shot here. There's lots of blood and he had brain matter,' he told CBS News.

'So I got him together so I got people there really helpful. I did CPR chest compressions as well.'

Butler County District Attorney Richard Goldfinger reportedly said one person is believed to be dead and 'possibly a second.'

He said the person believed to be dead was 'someone in the crowd.'

A helicopter was heard circling above the rally as the emergency room doctor continued his harrowing recounting of events.  

Trump was rushed to a local hospital and treated for his gunshot wound. 

He put out a statement on Truth Social confirming he was struck by a bullet, while thanking the Secret Service and law enforcement for their 'rapid response on the shooting that just took place in Butler, Pennsylvania.'

The former president also confirmed that one rally-goer was killed and another was 'badly injured.' 

'Most importantly, I want to extend my condolences to the family of the person at the Rally who was killed, and also to the family of another person that was badly injured.'

'It is incredible that such an act can take place in our Country. Nothing is known at this time about the shooter, who is now dead. I was shot with a bullet that pierced the upper part of my right ear. I knew immediately that something was wrong in that I heard a whizzing sound, shots, and immediately felt the bullet ripping through the skin. Much bleeding took place, so I realized then what was happening. GOD BLESS AMERICA!' 

The U.S. Secret Service issued a statement, confirming 'an incident occurred the evening of July 13 at a Trump rally in Pennsylvania.'

'The Secret Service has implemented protective measures and the former President is safe. This is now an active Secret Service investigation and further information will be released when available.'

Trump campaign spokesperson Steven Cheung thanked law enforcement and first responders 'for their quick action during this heinous act.'

'[Trump] is fine and is being checked out at a local medical facility. More details will follow.'

President Joe Biden sent out a statement at 7:53 p.m. ET saying he is 'praying' for former President Donald Trump and condemning 'this kind of violence' in the aftermath of Saturday's shooting at Trump's rally in Butler, Pennsylvania.

'I have been briefed on the shooting at Donald Trump’s rally in Pennsylvania. I’m grateful to hear that he’s safe and doing well,' he stated.

'I’m praying for him and his family and for all those who were at the rally, as we await further information. Jill and I are grateful to the Secret Service for getting him to safety. There’s no place for this kind of violence in America. We must unite as one nation to condemn it.' 

The assassination attempt occurred just days before the Republican National Convention kicks off in Milwaukee, Wisconsin.

Trump is expected to address his delegates assembled who will formally nominate him to become the GOP nominee for the presidency. 

His campaign said he will still attend the convention, which will go on as planned.

'As was communicated earlier this evening, President Trump is doing well and grateful to law enforcement and first responders for their fast action.'

'President Trump looks forward to joining you all in Milwaukee as we proceed with our convention to nominate him to serve as the 47th President of the United States. As our party's nominee, President Trump will continue to share his vision to Make America Great Again.'