An Iraqi forces' fighter holds upside down an Islamic State group flag | Ahmad Al-Rubaye/AFP via Getty Images Europol claims successful crackdown on ISIS propaganda Amaq News Agency among outlets targeted in coordinated takedown operation.

The EU, Canada and the U.S. conducted a successful joint operation against media outlets affiliated with the terror group Islamic State that will "severely disrupt their propaganda flow," Europe's law enforcement agency Europol said Friday.

The operation was coordinated by the European Union Internet Referral Unit (EU IRU) within the European Counter Terrorism Centre (ECTC) at Europol and involved authorities from Belgium, Bulgaria, Canada, France, the Netherlands, Romania, the United Kingdom and the U.S., according to a statement released Friday.

Law enforcement agencies expect the joint effort — which resulted in the seizure of digital evidence and IS servers on April 25 and 26 — will help identify both the administrators of ISIS websites and "potentially radicalized individuals on European soil and beyond," the agency said.

Targeted media outlets included major ISIS-branded media outlet Amaq News Agency — commonly considered the terror group's main mouthpiece and available in at least nine languages — as well as al-Bayan radio, Halumu and Nashir news.

"With this groundbreaking operation we have punched a big hole in the capability of IS to spread propaganda online and radicalize young people in Europe," outgoing Europol Director Rob Wainwright said.

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos also expressed optimism that the operation would bolster the EU's fight against terrorism and extremism.

"Today's international takedown action, with the support of Europol, shows our global strength and our unwavering resolve to fight against terrorist content online," Avramopoulos said. "Daesh is no longer just losing territory on the ground — but also online. We will not stop until their propaganda is entirely eradicated from the internet."

The activity of ISIS-controlled outlets has significantly fallen since the group lost its hold on Raqqa, Syria, in October 2017, according to the BBC. Its research divison, BBC Monitoring, also noted "the absence, or publication interruption, of two key ISIS media products: monthly magazine Rumiyah and al-Bayan radio."