United Kingdom, July 10 -- Julian McMahon's cause of death has been confirmed.

The Nip/Tuck actor passed away last week aged 56 after a battle with cancer and documents obtained by People have revealed that he died from lung metastasis as a result of head and neck metastatic cancer.

A Cremation Approval Summary Report from Pinellas County Medical Examiner's Office in Florida ruled the manner of McMahon's death as natural and his remains have since been cremated.

Julian's wife Kelly Paniagua shared the tragic news that the Australian star had passed away last week.

She said in a statement: "With an open heart, I wish to share with the world that my beloved husband, Julian McMahon, died peacefully this week after a valiant effort to ove...