BlackRock removes 2022 ad that included images of Trump gunman Thomas Crooks after it was filmed at his high school while he was a senior

American investment monolith BlackRock has removed a 2022 advert that includes images of Donald Trump's would-be assassin Thomas Matthew Crooks. 

Crooks, 20, was killed by a Secret Service sniper after he opened fire at a Trump campaign rally near Butler, Pennsylvania on Saturday, injuring the former president and two others, and killing one person. 

But before he became an attempted-murderer, he was a quiet, lonely student at a nearby high-school who starred in a TV ad run by the corporation. 

The now-dead shooter appears twice in the 30-second slot, listening intently to a teacher at Bethel Park High School, on the southern edge of Pittsburgh, while wearing a gray hoodie. 

Crook, who was a senior at the high school when the ad was first circulated, does not say a word in the advert, titled 'AP and Honors Economics', which promotes BlackRock's retirement plan assets for public school teachers. 

A BlackRock spokesperson confirmed that Crooks had appeared in the ad in a statement to the New York Times.  

Before he became an attempted-murderer, Thomas Crooks (pictured) was a quiet, lonely student at a nearby high-school who starred in a TV ad run by the corporation

Crook, who was a senior at the high school when the ad was first circulated, does not say a word in the advert

Crooks, 20, was killed by a Secret Service sniper after he opened fire at a Trump campaign rally near Butler, Pennsylvania on Saturday

'In 2022, we ran an ad featuring a teacher from Bethel Park High School, in which several unpaid students briefly appeared in the background, including Thomas Matthew Crooks', the spokesperson said. 

'We will make all video footage available to the appropriate authorities, and we have removed the video from circulation out of respect for the victims.

'BlackRock strongly condemns political violence of any kind and will do our part to promote civility and unity in the country.'

MailOnline has contacted BlackRock for comment. 

Details of Crooks and his life have begun to emerge in the days after the shooting. 

Disturbing anecdotes have emerged from those who knew Crooks dating back to his days at Bethel Park High School. 

Crooks tried out for the school's rifle team but was turned away because he was a bad shooter, said Frederick Mach, a current captain of the team who was a few years behind Crooks at the school.

Thomas Matthew Crooks, the 20-year-old would-be assassin who shot Donald Trump, was once rejected from his high school rifle club and considered a danger

This is the moment the president was injured as at least one stunned onlooker realized something had gone very wrong 

Blood can be seen pouring from the side of the former president's head

Jonathan Myers, a member of the team around the time Crooks auditioned, said there was something ominous about him back then.

'He didn't just not make the team, he was asked not to come back because how bad of a shot he was, it was considered like, dangerous,' Myers told ABC News.

Fellow classmate Jameson Murphy added: 'He tried out…and was such a comically bad shot he was unable to make the team and left after the first day.'

Murphy told the New York Post that Crooks once fired a shot that missed his target by almost 20 feet.

Crooks once fired from the seventh lane — the closest lane to the right wall — and hit the left wall, completely missing every target on the back wall. He missed his target by close to 20 feet, Murphy recalled.

Others who were on the team said Crooks would make inappropriate jokes and overall, didn't seem right.

'We noticed a few things Thomas said and how he interacted with other people… He said some things that were kind of concerning,' a classmate said.

A resident who wanted to remain anonymous confirmed the identity of the gunman to DailyMail.com

Members of the community where Crooks is believed to have lived with his parents were swarmed by police and Secret Service on Sunday morning

Law enforcement locked down the streets where Crooks lived on Sunday morning during the investigation into why he wanted to shoot the former president, and how he managed to do it

Officers stand guard outside a cordon in Bethel Park as cops search an address registered to Crooks

Republican candidate Donald Trump is seen with blood on his face surrounded by secret service agents as he is taken off the stage at a campaign event at Butler Farm Show Inc

'He made some crass jokes that weren't appropriate when there are firearms in the school setting,' they added.

Images of Crooks wearing glasses, braces, and an American flag t-shirt in a yearbook headshots emerged on Sunday morning, hours after he tried to take out the presumptive Republican nominee and killed a member of the rally crowd.

Crooks was a dietary aide at Bethel Park Skilled Nursing and Rehabilitation Center - where he provided food and care for post-hospital elderly and sick people.

His employer confirmed on Sunday that he had a clean background check and 'performed his job without concern' before he attempted to kill Trump.

Bethel Park School District - where Crooks was a student until two years ago - verified his graduation and vowed full cooperation with investigators.

Records show he donated to a group who backed President Joe Biden on the day of the inauguration in 2020.

A resident near to where Crooks lived, who wanted to remain anonymous, confirmed the identity of the gunman to DailyMail.com.

Trump had blood streaming down his cheeks as Secret Service agents put him to the floor 

Trump was left bloodied and hurt during the assassination attempt as he was seen to suddenly grab hold of his ear as loud bangs rang out

Members of the community where Crooks is believed to have lived with his parents were swarmed by police and Secret Service on Sunday morning.

Those who spoke to DailyMail.com said the family were quiet and kept to themselves.

His father, Matthew Crooks, 53, told CNN he was trying to figure out 'what the hell is going on' but would 'wait until I talk to law enforcement' before speaking.

Law enforcement sources told CBS News that Crooks, from Bethel Park, Pennsylvania, had been armed with 'an AR-style rifle'.

During the attack, he appeared to be wearing merchandise promoting one of YouTube's most popular channels devoted to firearms - Demolition Ranch - NBC News reported.

Special Agent Kevin Rojek, the FBI officer in charge, said Crooks had been identified using DNA as he was not carrying any ID on him.

Trump is seen surrounded by Secret Service agents in the moments after the shooting. He raised his fist to indicate that he was okay in an image that has since swept the globe 

Trump mouthed the word 'fight' at supporters as blood spattered across his face 

Trump's campaign said he was raced to hospital after the shooting, but is 'fine' 

Last night a bomb squad and agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives were at an address registered to Crooks as cops stood guard in front of yellow police caution tape. 

Trump was left bloodied and hurt during the assassination attempt as he was seen to suddenly grab hold of his ear as loud bangs rang out and whizzed by before he ducked to the floor.

The Secret Service swarmed around the 45th US President as piercing screams were heard from the MAGA crowd.

He then got to his feet with blood pouring down his cheek and raised his fist in the air and defiantly shouted 'fight' while the audience shouted 'USA' as he was dragged off stage and bundled into a vehicle.

Secret Service agents could be heard shouting 'the shooter is down' in the ensuing chaos and the gunman was later confirmed dead.

Trump was taken to hospital for treatment before being later released. 

Police snipers return fire after shots were fired while Trump was speaking at a campaign rally

Trump supporters cowered for safety in the stands as chaos took hold 

Spokesman Steven Cheung said Trump is 'fine' and being checked out at a local medical facility while the former president's eldest son Donald Trump Jr said his father 'is in great spirits'.

Trump flew back to New Jersey ahead of his spending the night at his golf resort in Bedminster.

In a post to his Truth Social network, Trump thanked the Secret Service and other law enforcement 'for their rapid response'.

'I knew immediately that something was wrong in that I heard a whizzing sound, shots, and immediately felt the bullet ripping through the skin,' he said on social media.

'Much bleeding took place, so I realized then what was happening.

'I want to thank The United States Secret Service, and all of law enforcement, for their rapid response,' Trump added.

'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. 

'GOD BLESS AMERICA!'