Islamic State’s new spokesman has promised more attacks on Europe, urging supporters to target “markets, roads and clubs” in his inaugural audio message.

Abuu al-Hassan al-Muhajer, whose role as the group's mouthpiece was disclosed for the first time on Monday, told Islamic State of Iraq the Levant (Isil) followers to "redouble your efforts and step up your operations."

“We will attack them in their own countries, he said. “Your operations make a difference, change the situation … burn the ground under their feet.”

He railed against “crusader America and Europe, Russia, and Iran,” calling them enemies of Islam which should be destroyed.

Little is known about Muhajer, who is referred to only by his nom-de-guerre. Isil leadership usually hide their real identity for security reasons.

His predecessor, Mohammed al-Adnani, was killed in a US air strike in August. Adnani had been second-in-command to the group’s leader Abu Bakr al-Baghdadi and is the most senior Isil figure to be killed.