The investigating officer believes Oscar Pistorius may be a flight risk.
"We don't want another Dewani," the officer says, referring to Shrien Dewani - the British man accused by a South African court of arranging the murder of his wife on their honeymoon there.
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The 53-member body agreed that Prince Charles should succeed the Queen as the next commonwealth head.
Mary Ragoobeer and her sons, Shane and Sean, were killed in the blast in Leicester on February 25.
Wiltshire Council has warned work to remove toxic traces from nine hot spots around the city could take months.