Two teenage girls were left with bruised faces after being assaulted by two other girls in Newbury.
The assault took place after an argument broke out between the two groups in Old Newtown Road at the junction with Willow Close at about 4.25pm on Wednesday, March 25.
The girls who carried out the assault are described as white and believed to be 15-years-old.
The victims did not require hospital treatment.
Investigating officer, PC Elliot Male said: “I believe the assault was witnessed by a woman pushing a buggy. The woman stopped to ask the victims if they wanted her to call the police.
“I would urge this witness to contact police via 101 because she might have vital information that can help bring the perpetrators to justice.”
Anyone with information about the assault should contact the Thames Valley Police Enquiry Centre on 101.