Supporters of the Islamic State took to social media to cheer Friday’s terrorist attack on a London Subway train that left 22 people injured.

“Allahu Akbar!! Our lions are striking terror into the hearts of the kufr,” one supporter wrote, according to the Express UK.

“It goes like, BOOM! Loud BOOM!” another supporter reportedly wrote, accompanying the message with a heart emoji, according to the U.K. Sun.

“Just terror,” reads another text with a smiley-face symbol.

The SITE Intel Group, a non-governmental counterterrorism group, similarly noted that ISIS supporters were celebrating the subway attack, and “one remarked that the incident demonstrates “weakness” in UK security”:

As #ISIS supporters celebrate news on #LondonExplosion, one remarked that the incident demonstrates "weakness" in UK security #ParsonsGreen — SITE Intel Group (@siteintelgroup) September 15, 2017

The death fanatics even took to social media to celebrate non-terror related events, such as last week’s devastating Hurricane Irma.

One posted, “May Allah drown the enemies of Islam and force them to their knees to be subdued.”

This is not the first time Islamic State sympathizers have praised terror.

After the devastating June attacks in London, Islamic State sympathizers and militants wrote in encrypted chatrooms in support of the terrorist attacks. Breitbart News reported:

IS member Abi Abdullah Almasri (the Egyptian), wrote, “Thanks to Allah, thank you, thanks to Allah, Allah is great, thanks to Allah from faith that he will make his promise reality and give victory (to the faithful). Allah will bless the lions. Allah will bless the lone wolves. Allah will reward you as long as you run over and stab these infidels in the depths of their countries. Put fear into their eyes, increase your hits, increase your attacks, don’t let them feel secure in their countries.”

The Express noted that IS loyalists also celebrated the Barcelona attacks, writing on Telegram, “A van just ran over people in Barcelona!!! Allu Akbar!!!! They can die in their rage.”

Adelle Nazarian is a politics and national security reporter for Breitbart News. Follow her on Facebook and Twitter.