South African police said the break-in at Tutu's home in Cape Town happened between 7 and 9pm on Tuesday, the same day he spoke at the memorial service 800 miles away in Johannesburg.
A police statement said: "At this stage, we cannot give further details, as the investigation into the matter is still ongoing. No arrests have been made as yet."
The 82-year-old was also burgled at home August as he and his wife slept inside. Both were unhurt.
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