Police said a traffic incident in which five children and four adults were injured outside a primary school in Rhoose, South Wales, was not believed to be deliberate.
"At this stage the collision is not believed to be a deliberate act," South Wales Police said in a statement.
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Nearly 38,000 runners will hope to complete Sunday's London Marathon making it the biggest event in its 35-year history.
Rain across central Britain with longer, intense downpours with thunder in places this evening. A lucky few will stay sunny and dry.
Planning on going to the London Marathon tomorrow? Read our handy guide first!