A470 Ffrwd Road is closed after an accident at the A465 Heads Of The Valleys Road (Cefn Coed Roundabout).
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Theo Jones, from Merthyr Tydfil, is thought to have drowned in a swimming pool at the hotel he and his family were staying at.
Catch up on Monday's Wales at Six with Kylie Pentelow.
It will be a largely dry night with mist patches developing in places.