A Nottinghamshire police officer has suffered fractures to her cheekbone, nose and eye socket after she was hit in the face with a brick.
Two other police officers were assaulted – with one being spat at and other being bitten on the arm.
The incident occurred early on the morning of 16 June on Linden Street, Mansfield after officers approached three teenagers who were threatening to damage cars.
A 16-year-old girl has been arrested on suspicion of causing grievous bodily harm and a 13-year-old was arrested on suspicion of assaulting an emergency worker.
Detective Sergeant Matt Dumbrell, of Nottinghamshire Police, said: “Police patrols have been stepped up to reassure the local community and I would urge residents to keep us informed of any issues.”
Det Sgt Dumbrell commended the officers’ bravery but insisted being assaulted should never be thought of ‘part of the job’ for police officers.
He added: “Police officers go out every single day to keep the public safe from harm. They have the right to go about their work without being assaulted and abused.
“Emergency workers are there to help people in what are likely to be their greatest hours of need.
“We must make it clear that we will not accept this treatment of our officers and staff.
“It is simply not part of the job and it shouldn’t happen.”
The officers involved in the incident are being supported during the investigation.