He has consistently denied the allegation but faces up to 60 years in prison if convicted.
Duggan has been held in maximum-security prisons since his arrest, and his family has been fighting for his return to Australia. They argue that his extradition request is politically motivated and that Australia's extradition treaty with the US exposes Australians to being unlawfully lured back to the country.
His case has gained attention, and his family hopes that it will be raised when Australian Prime Minister Anthony Albanese meets with US President Joe Biden during a state visit. They are urging the prime minister not to support Duggan's extradition and to allow him to remain in Australia.
The extradition battle is ongoing, with Duggan's legal team expected to ask for a postponement of a full hearing in the coming days.