A man has been arrested following the death of a woman in Somercotes on Saturday.
Derbyshire Police said the emergency services were called to Burke Drive just before 4pm and found the 30-year-old woman dead in a house.
A force spokeswoman said a 22-year-old man has been arrested in connection with the incident.
The woman has not been formally identified but her relatives have been informed.
A post mortem examination was expected to be carried out on Sunday to determine the cause of her death.
A police incident room has been set up at Ripley and anyone who has any information that may help the police investigation is asked to contact Derbyshire Police on 101 or Crimestoppers on 0800 555111.