The 85-year-old announced the decision in Latin during a meeting of Vatican cardinals this morning.
He said that because of his age and diminishing strength, he didn't feel he could carry on.
On the Island, Lord Bishop Robert Paterson has described the Pope as having a formidable intellect but also formidably conservative.
He admits the resignation has come as a surprise:
Repair scheme an 'antidote to throwaway culture'
ECAS launches initiative to upcycle unwanted items
Douglas council seeking sites for future housing development
Plans for 'major investment in new, energy-efficient homes'
Yellow alert for heavy rain issued, replacing previous warning
Ronaldsway Met Office has upgraded the warning, predicting heavy rain across the Island
Most Manx students studying in northern universities
High contingent in north-west England
