Julian McMahon 's cause of death has been revealed. According to a Cremation Approval Summary Report from the Pinellas County Medical Examiner's Office in Florida obtained by PEOPLE, the Australian actor, best known for roles on Nip/Tuck and Charmed, died from lung metastasis as a result of head and neck metastatic cancer.

Along with 'Fantastic Four' and 'FBI,' Julian McMahon could be seen in 'Charmed,' 'Nip/Tuck,' and 'The Surfer.'

Tributes poured in for Julian McMahon, the star of "Charmed," "FBI: Most Wanted," "Nip/Tuck," and "Fantastic Four," among many films and TV shows.