Police are appealing for witnesses after a heated dispute between a man and woman near canal boats in Whaley Bridge.
The disturbance happened near boats moored close to the bridge that leads to Tesco, off Buxton Road, between 11.30pm and midnight on September 23.
Officers investigating the disturbance want to speak to anyone who was in the area between those times.
They also want to speak to any canal boat owners or residents who were moored in the same location or nearby Whaley Bridge on that date.
Witnesses or anyone with information should call DC Vanessa Barry on 101, quoting reference 16000292055.
Alternatively, send her a message online by visiting www.derbyshire.police.uk/Contact-Us.
You can also call Crimestoppers on 0800 555 111.