A 14-YEAR-OLD boy has been warned by police after uploading a video of himself involved in a sex act with a Forest schoolgirl of the same age on Facebook.

Police stepped in after a tip-off from a parent that students were watching the short clip online.

The clip was filmed on a mobile phone and the girl was unaware it was on the social networking site.

The 14-year-old boy from Cheltenham was given a final warning.