West Midlands Police have launched a probe into a bullying incident after it was reported to them on Saturday night.

Mobile phone footage shown on Facebook shows two 14 year old schoolgirls being bullied & attacked by another teenage girl, in the Northfield area of Birmingham.

The unprovoked attack saw the girls being forced to their knees and told to apologise for giving dirty looks before being pushed to the floor and assaulted.

Police are in the process of speaking to those involved and plan to arrest the female offenders.