Nelson Mandela's health is improving, according to two of his granddaughters.
"Our grandfather is doing very well," Zaziwe Dlamini-Manaway told ITV News Africa Correspondent Rohit Kachroo.
"He is stable but critical, but he is doing much better."
Swati Dlamini said she had been seeing a lot of the former South African president in hospital.
"We spend a lot of time back and forth to Pretoria," she said.
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."