Two people who were hit by a taxi on Wood Street, near the Millennium Stadium in Cardiff, last night have now been discharged from hospital.
Six others remain in hospital. It is believed their injuries are serious, and could be spinal, but not life-threatening.
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Evening sunshine will give way to a dry and clear night with light winds.
A survey found the posts included comments about the teachers competence, and appearance.
Temperatures will rise steadily in the strong June sunshine.