Derbyshire Police have released an image of a woman they would like to speak to about crimes in Dronfield.
They are investigating a crime in the town whereby someone has produced and distributed leaflets containing personal information about a family.
It is being linked to a crime where a family is being sent distressing material through the post.
Witnesses or anyone with information should call PC Matthew Brown on 101, quoting reference 17000221713.
Alternatively, you can send him a message online at www.derbyshire.police.uk/Contact-Us.
You can also call Crimestoppers on 0800 555 111.