A teenage girl suffered with a dislocated jaw after she was assaulted in Dereham.
The attack happened at about 11.20am on Wednesday, November 2, while the 14-year-old was walking through a churchyard near Becclesgate.
Four young men approached her and one of them assaulted her.
Officers want to speak to anyone who was in the area at the time and may have seen or heard anything suspicious, or anyone with any information about this incident.
Calls should be made to DC Ian Young at Thetford CID on 101 or Crimestoppers anonymously on 0800 555111.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here