A post mortem will take place later today on the body discovered in a cemetery in Didcot, Thames Valley Police said.
Detective Chief Superintendent Andy Murray told reporters that although formal identification has yet to take place, the body is believed to be that of missing teenager Jayden Parkinson.
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Police say it is "too early" to know if the body is that of journalist Kim Wall, who is believed to have died on board an amateur submarine.
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