The parents of missing Madeleine McCann have said "there will always be hope" in the hunt for their daughter despite doubt over the future of the British police investigation into her disappearance.

Kate and Gerry McCann on Tuesday marked nine years since the little girl vanished, saying in a statement on their website that "information is still forthcoming" in the inquiry.

It came after Metropolitan Police Commissioner Sir Bernard Hogan-Howe revealed that British investigators have one remaining line of inquiry before the probe is wound up in the next few months.

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