EDL Birmingham protest: 'About 20' arrests made 21 July 2013 Last updated at 11:27 About 20 people were arrested during an English Defence League EDL rally and counter protest in Birmingham, West Midlands Police say. Up to 2,000 people gathered at two protest locations in Birmingham city centre on Saturday. EDL supporters were in Centenary Square from about noon while opposition groups gathered in Chamberlain Square. Police said supporters of both events were detained for public order offences. A small number of protesters and police officers were injured and four people were arrested after bottles were thrown at police during the EDL protest. Successful operation One officer who was taken to hospital after suffering a head injury has been discharged. West Midlands Police said about 1,000 extra police officers had been on duty and the force helicopter had been used to monitor the situation. Assistant Chief Constable Sharon Rowe said both demonstrations "largely passed off without serious incident" and it had been a "successful operation." She said: "We are aware of some instances of criminal damage and a number of assaults have been reported, which will be the subject of our ongoing inquiries. We recognise that the people of Birmingham have been both concerned and inconvenienced and we would like to thank them for their tolerance, co-operation and patience.