The A465 Heads of the Valleys Road is blocked Westbound between the Rhigos Roundabout and Glynneath Interchange.
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A greyer start in northern areas, but the sun will shine today! Temperatures will steadily rise too!
The escaped hog was spotted holding up traffic in Ynyswen.
A 22-year-old man has been arrested and is currently in custody. Police are appealing for witnesses.