Police investigating the disappearance of Jayden Parkinson have said there is evidence of a "recent and unauthorised disturbance" at a grave site in All Saints' Church in Didcot, Oxfordshire.
Detective Chief Superintendent Andrew Murray said forensic scientists had begun the "difficult process" of securing evidence at the grave site, in a cemetery close to where Jayden was last seen in Didcot.
He said the family of the person the grave belongs to has been informed.
Detectives are in constant contact with Jayden's family as the examination of the grave, which could take a number of days, progresses.
More top news
Hollywood film directors are being asked by the US government to help combat the allure of the so-called Islamic state on social media.
A cross-party group of politicians have teamed up to launch a campaign to "take a stand" against online abuse.
Months of messages contradict the public claims of doctors during the dispute and reveal pay was central to their row with the Government.