Story highlights Neil Prakash was considered Australia's most prominent ISIS recruiter

He appeared in ISIS recruitment videos and urged Australians to join the caliphate

(CNN) An Australian ISIS recruiter who called on his countrymen to "start attacking before they attack you" has died in a U.S. airstrike.

Neil Prakash was the country's "most prominent" ISIS recruiter and its "highest value target," according to Australian Attorney General George Brandis.

"He was the individual more than any other who had been actively inspiring and inciting domestic terrorism attacks within Australia," Brandis said in an interview with CNN affiliate Sky News.

Prakash featured in ISIS promotional videos.

Prakash was killed on April 29 in Mosul, Iraq by a U.S. airstrike, Brandis said in a statement.

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