A military drone strike has killed a cyber-jihadist defined as a "high-value target" within the Islamic State, according to The BBC. This had dealt a significant blow to the terrorist group.

With this death, ISIS, the Islamic State, has received an "unmistakable message," chairman of the Homeland Security Committee Michael McCaul said. The target was was a key figure inside the Islamic State and a wanted hacker, according to The Guardian.

Junaid Hussain, 21, is a convicted computer hacker who fled to Syria in 2013. Hussain was part of a hacking group known as Team Poison, a team responsible for more than 1,400 criminal acts. Hussain was number three on the Pentagon's ISIS "kill list," The BBC reported.

"This is a serious blow to ISIS -- and a swift act of justice against a top cyber jihadist and recruiter," McCaul said. Among many other cyber crimes, Hussain was connected to attacks on Twitter accounts and U.S.-based Internet sites. In 2012, he hacked England's Prime Minister Tony Blair.

Hussain was born in Britain and was a part of the Cyber Caliphate, according to Yahoo! News. In an official statement from an unnamed official, his death was announced with "a high degree of confidence."