A three-year-old girl woke up at her own funeral after doctors mistakenly declared her dead at a town in Mexico.

During the funeral service the next day, the mother noticed that a glass panel in Camila’s coffin was mysteriously clouded over. But mourners believed grief-stricken Mary was hallucinating and talked her out of opening the casket, according to a report in the Sun newspaper.

However, moments later the little girl’s aternal grandmother spotted Camila’s eyes moving. Relatives rushed to check the three-year-old’s pulse and found she was in fact alive – just as she was set to be buried.

Little Camille was taken to the hospital from the funeral venue, where she was sadly pronounced dead for a second time.

New York Post quoted the mother as saying that the hospital staff took a long time to put oxygen on her. After 10 minutes of putting her on intravenous fluids, the doctors removed it and asked Ms Mendoza to “let her rest in peace”, according to the newspaper.

The doctors declared dehydration as the official reason for the girl’s death on August 17.

The girl was again taken to the hospital in an ambulance where the doctors unsuccessfully tried to revive her and declared her dead again – this time from a cerebral edema (brain swelling), said the Post report.

Ms Mendoza has now filed a case against the doctors who declared her dead. The woman told the local El Universal newspaper that she doesn’t hold any grudge against the healthcare professionals, but want them charged so that “this does not happen again”.

The San Luis Potosi State Attorney General has launched an investigation.