His agent has told ITV News the 72-year-old died from a short illness. He was surrounded by his family at a hospice in Rotherham in South Yorkshire.
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The marsupial was moved to "more spacious accommodation" by rangers in Victoria, Melbourne after being spotted by a cleaner.
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Sir Bernard Hogan-Howe said a judge-led review into how the Met Police handled allegations of past sex abuse is "the right thing to do".