Emergency services have descended on Berriew Street which is currently closed.
Personnel from Dyfed-Powys Police, Mid and West Wales Fire and Rescue Service and the Welsh Ambulance Service are all in attendance this morning.
No official information has been released so far, but our correspondent on the scene described it as a “major response” with numerous personnel on site.
Fire fighters have been seen emerging from one of the alleys wearing specialist breathing apparatus.
As soon as we receive official information, we will share it with you.
PICTURE: By Phil Blagg Photography