A pupil had his teeth knocked out during a lunchtime fight at school.

Police were called after the a row between pupils at the Holy Trinity School in Buckswood Drive in Crawley on Thursday, June 7.

A 12-year-old boy had dislodged teeth and facial injuries from the scrap, and now needs specialist dental treatment.

The other boy was arrested on suspicion of causing grievous bodily harm, and following a police interview was released under investigation.

Now police want to track down footage taken by other pupils on their mobile phones.

Investigator Lauren Chapman said: “We have been told that a video was taken of the incident by another pupil or pupils, and was posted on the Internet via Snapchat.

“There is currently no trace of it on the web but it could obviously be a valuable part of our investigation.”

Anyone who knows where video footage can be found is asked to contact the police online or by calling 101 and quoting serial 771 of 07/06.

Police have also warned those with footage not to post it on the internet or to send it to friends, as it could harm the investigation.