My granddaughter goes training in a gym at the top end of the Treforest trading estate on Tonteg Road.

Tonight there was a massive explosion behind the Griffin Mill garage on Tonteg Road at around 19.00

My granddaughters group had to evacuate their gym

Nothing on wales online yet but I am sure there will be. No idea of any casualties yet

Update

Major incident now declared by South Wales Police

11 Fire service vehicles in attendance