The driver of a tipper truck which struck and killed four people has been arrested on suspicion of causing death by dangerous driving.

Philip Potter, 19, from Brinkworth in Wiltshire, was moving sand and gravel in Bath on 9 February when the truck hit and killed Mitzi Rosanna Steady, 4.

Her grandmother was also hit and remains in critical condition in hospital.

The 32-tonne truck allegedly went on to hit a number of other vehicles before overturning on to a Volvo at the bottom of a hill, killing the three men inside.

They were Robert Parker, 59, from Cwmbran, electricity company director and father of two Philip Allen, 52, and recently-married taxi driver Stephen Vaughan, 34, both from Swansea.

Avon and Somerset Police confirmed they had arrested Mr Potter, who is also being held on suspicion of manslaughter by gross negligence for the same incident, and a 28-year-old man.

The 28-year-old was arrested on suspicion of causing manslaughter by gross negligence.