Three people were punched, strangled and hit with a baton by four suspects in Banbury.
The assault happened in Edmunds Road on May 3 at about 11.05am.
Two suspects have been arrested and an investigation is taking place.
A police spokesperson said: "During this assault, four suspects punched, strangled and used a baton against three victims.
"If you believe you may have witnessed this assault, or have any information, please call 101 and quote reference number 43220189494."