A man has been arrested on suspicion of murdering an 86-year-old woman and the attempted murder of her 88-year-old husband.
Freda Walker was pronounced dead at her home in Langwith Junction, near Bolsover in Derbyshire, on Saturday, police said.
Town councillor Kenneth Walker, 88, was taken to hospital in a life-threatening condition.
The 33-year-old suspect, from Warsop, Nottinghamshire, was held in the early hours of Thursday on suspicion of murder and attempted murder.
One of the “leading lines of inquiry” is that it may have been a burglary, Assistant Chief Constable Dave Kirby said at the scene, although it is not yet possible to be be “conclusive” about a motive.
He has asked anyone who was in the area between 4.30pm on Friday and 9am on Saturday to come forward.
He told reporters: “Yes, we have made an arrest, but of course the investigation carries on, so we’re always looking to add to the information that we’ve got.”