The body of a woman has been found in a house in South Normanton, Derbyshire Police can confirm.
Paramedics found the body at a house in Alfred Street at about 10am on Thursday, December 13, after receiving a 999 call.
Police detectives were then called and an investigation into the circumstances is ongoing.
A police spokesman said: "A 39-year-old man has been arrested in connection with the incident and is in police custody.
"As part of our investigation, we want to hear from anyone who might have information that could assist our officers.
"Did you see suspicious activity in the area late last night or early this morning?
"If you can help, call us on 101 and quote incident 323 of December 13.
"You can also call Crimestoppers, anonymously, on 0800 555 111."