A house in Oxford has been taped off by police officers overnight.
An incident occurred on St Nicholas Road in Littlemore.
One eyewitness, who wished to remain anonymous, said: "One of the houses on St Nicholas Road in Littlemore is taped off by police.
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"There is currently one police car with two officers guarding the house."
He added that there were reports of an ambulance and further police cars at the address earlier in the evening.
Thames Valley Police has been contacted for comment.
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