Australian Islamic State terrorist Neil Prakash has been connected to a failed plan to attack New York’s Statue of Liberty, according to court documents.

Prakash was identified by US federal prosecutors as an ‘attack facilitator’ during the sentencing of ISIS extremist Munther Omar Salek.

Director of George Washington University extremism program, Seamus Hughes, said it may take years to uncover the full number of terrorism plots Prakash was involved in.