A 53-year-old woman and her two-year-old grandson were pushed from a car after an alleged assault.
The incident occurred in the Belper River Gardens car park last Sunday, July 6, between 4.50pm and 5.10pm.
The woman was walking her grandson in a pushchair when she stopped to speak to a man whom she knew. She got into his car where an altercation took place.
The man allegedly slapped the woman's face and pushed her and the child, who was sitting on the woman's lap at the time, from the car.
The woman suffered swelling and bruising from the alleged slap and the child had a bruise on his cheek.
Officers have interviewed a 46-year-old man in relation to the incident.
Anyone who witnessed the incident or has any information is asked to contact PC James Shaw at Ripley Police Station using the 101 number.
If you wish to call anonymously, ring Crimestoppers on 0800 555 111.
