The Islamic cleric believed to be JI's leader remained under police guard in hospital on Thursday, with doctors saying he was too ill to be questioned.

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All four are still critically ill in hospital but are said to be improving.

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Mr Hearns said seriously ill patients in remote areas such as Mull or Barra would be taken to a hospital with GP cover, but critical care for any emergency interventions may not be available.

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Betsi Cadwaldr has also been consulting on plans to close minor injuries units along with some community hospitals, while specialist care for very ill newborn babies could be moved from Denbighshire's Glan Clwyd Hospital to Arrowe Park Hospital in Wirral.

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