Police are continuing to question a woman over a car crash at a school which killed an eight-year-old girl.
Sixteen people needed treatment after a Land Rover crashed into The Study Preparatory School in Wimbledon, south-west London, on Thursday.
The woman in her 40s remains in custody having been arrested on suspicion of causing death by dangerous driving.
One line of inquiry is that the driver had a medical incident, the BBC understands.
The Met Police has removed the car from the site as part of its investigation and the cordon has been lifted. The force has said it is not treating the crash as terror-related.
London Ambulance Service said it sent 15 ambulances to the scene and 12 people were taken to hospital.
Det Ch Sup Clair Kelland, local police commander for south-west London, said: “We would ask people not to speculate while we work to understand the full circumstances of what has happened during this tragic incident.”
Floral tributes have been laid outside the school for girls aged four to 11, which is based on Camp Road near Wimbledon Common.
MP for Wimbledon Stephen Hammond said the pupils had been gathered for an end-of-year celebration party in the garden. He described the crash as “extremely distressing and extremely concerning”.
John Tucker, chair of the board of governors, said “the school community is profoundly affected by this tragedy”.
St George’s Hospital in Tooting said it had received “a number of patients who are being cared for by our specialist clinical teams”.
The school’s website was replaced by a holding page with a statement reading: “We are profoundly shocked by the tragic accident this morning at Wilberforce House and devastated that it has claimed the life of one of our young pupils as well as injuring several others.
“Our thoughts are with the bereaved family and with the families of those injured at this terrible time.”
The private girl’s school is just a mile away from the All England Lawn Tennis and Croquet Club as it hosts the world-famous tennis tournament.
On Thursday, a spokesman for Prime Minister Rishi Sunak said his “deepest condolences” were with the family of the girl who had died, and his thoughts were with all of those involved and injured.
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