A woman, who tended to two teenagers injured in an attack at a Bristol McDonald's is being sought by police as it is believed she could help them with their enquiries.
She told people at the incident she was a nurse before treating the pair, who had each received a injury, one to the arm and the other to the back.
The teenagers were attacked outside the Brislington branch of McDonald's on Emery Road n what bystanders have reported as a "stabbing".
The incident occurred on February 15, around 8:25pm.
Two boys, aged 16 and 17 years have been arrested.
An Avon and Somerset Constabulary spokesperson said: "We are keen to speak to this woman, who we believe may have information to help our enquiries into the incident.
"We would like the woman, or anyone who knows her, to contact us, quoting reference 5219034447"
