The A465 is blocked in both directions after an accident between the B4521 (Mardy) and Old Hereford Road (Llanvihangel Crucorney).
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They took their seven month-old infant from a contact centre in Pontypridd on Monday without the consent of the local authority.
Commons Seaker John Bercow has rejected the Government's request to table a so-called meaningful vote on Boris Johnson's Brexit deal.
It follows a letter written by Boris Johnson where he was legally obliged to ask for an extension in Brexit talks - but did not sign it.