Fox and Friends host Pete Hegseth said he was banned from Twitter Saturday after he shared an anti-American manifesto said to have been written by Pensacola shooter Mohammed Alshamrani.

The TV journalist, 39, posted screenshots Sunday which showed his tweet, calling the actions of the gunman 'Islamist terror', was 'no longer available'. He followed up with a picture of his appeal regarding the decision.

Saudi military student Alshamrani, 21, killed three people and injured 12 when he opened fire at Navy Station Pensacola on Friday.

Hegseth shared a grab from the shooter's Twitter account Saturday, writing: 'Here's the (now blocked) tweet from Saudi Islamist Mohammed Alshamrani, who murder 3 brave Americans in Florida.

'The coward posted it just hours before his terrorist attack. This is Islamist terror. No reason to ever mince words. Saudi Arabia must be held to account.'

Alshamrani's social media, which was taken down subsequent to the attack, appeared to show a variety of anti-Israel postings and a quote from deceased al-Qaeda leader Osama bin Laden.

Pete Hegseth, left, said he was banned from Twitter Saturday after he shared an anti-American manifesto said to have been written by Pensacola shooter Mohammed Alshamrani, right

It was sharing a screengrab of Alshamrani's posts that Hegseth said led to his ban on Twitter

Hegseth posted screenshots Sunday which showed his tweet was 'no longer available', above

Alshamrani's social media was also said to include a lengthy manifesto posted at 4:39am Friday, less than two hours before the shooting. The manifesto read in part: 'I'm against evil, and America as a whole has turned into a nation of evil.

'I'm not against you for just being American, I don't hate you because [of] your freedoms, I hate you because every day you [are] supporting, funding and committing crimes not only against Muslims, but also humanity.'

It was sharing a screengrab of this post that Hegseth said led to his ban on Twitter.

He wrote on Instagram Sunday: 'I was BANNED from @twitter — because I posted a screen shot of the terrorist from Florida tweeting his Islamist motivations.

ALSHAMRANI'S DISTURBING TWITTER ACCOUNT AND HIS PRE-SHOOTING 'MANIFESTO' The now-deactivated Twitter account purportedly belonging to Alshamrani included: - A variety of anti-Israel postings and a quote from deceased al-Qaeda leader Osama bin Laden - A lengthy manifesto posted at 4:39am Friday, less than two hours the shooting. The manifesto read in part: 'I'm against evil, and America as a whole has turned into a nation of evil. 'I'm not against you for just being American, I don't hate you because [of] your freedoms, I hate you because every day you [are] supporting, funding and committing crimes not only against Muslims, but also humanity.... Advertisement

'That’s it, a screen shot of a terrorist in his own words. If they can ban me, they will ban anyone. We need to fight back.

'Heck, I posted the terrorist screen shot on this post too, so stay tune for @instagram banning me too.

'Big tech does the bidding of the Left, especially to include anyone who speaks truth about the threat of radical Islam.'

He later added: 'I’m sure @twitter will heed my “appeal”... #banned.'

Twitter refused to comment on the ban when approached by DailyMail.com. The company announced in May it would be 'addressing the abuse of tech to spread terrorist and extremist content'.

Hegseth has not made any further comments.

The FBI revealed Sunday that the deadly mass shooting will be treated as an act of terrorism and that no arrests have yet been made in the incident.

Special Agent in Charge Rachel Rojas revealed that investigators have not yet been able to determine Alshamrani’s motive after revealing he visited New York City, including the Rockefeller Center, just days before the shooting.

They are working to determine the purpose of the trip.

Hegseth followed up with a picture of his appeal regarding the decision, above

US Naval Academy graduate, Joshua Kaleb Watson, 23, (left) and military student Mohammed Haitham, 19, (right) have been identified as two of the victims of Friday's shooting

Naval apprentice Cameron Scott Walters, 21, was named as the third victim

Using a Glock 9mm handgun he'd purchased by exploiting a legal loophole, Alshamrani opening fire in a classroom at the base on Friday morning.

He killed Airman Mohammed Sameh Hathaim, 19, Ensign Joshua Kaleb Watson, and Airman Apprentice Cameron Scott Walters, 21.

Eight others, including two deputies, were wounded in a gunfight with Alshamrani, who was later shot dead by police.

'Big tech does the bidding of the Left, especially to include anyone who speaks truth about the threat of radical Islam', Hegseth, pictured interviewing Mike Pompeo, wrote Sunday

Saudi military student Alshamrani, 21, killed three people and injured 12 when he opened fire at Navy Station Pensacola on Friday. The scene on Saturday is pictured