A reporter for Chard and Ilminster News has tweeted this photo purporting to show the closed service station at Southfield roundabout.
A large heavy goods vehicle can be seen in the background surrounded by police and ambulances.
The scene at Southfields Roundabout services. Police cordoned off a HGV. Appears to be around 20 people inside it. http://t.co/aUTBj5wVHG
More top news
Cuillin, six, and four-year-old Lejla designed the memorial plaque to their mum that has been installed in the Commons chamber.
Over-abstraction and an exceptionally dry winter are affecting hundreds of streams in England and Wales, warn wildlife experts.
Wet and windy across Scotland this weekend.