West Midlands Police are aware of some disorder in Birmingham city centre.
Several premises in the centre have been attacked with some shop windows smashed and property stolen in various locations.
ACC Sharon Rowe said: “We will not tolerate mindless violence and damage anywhere in the West Midlands and are working to ensure that the offenders are identified and caught as soon as possible.
“A policing operation is in place with extra officers in Birmingham to restore calm in the city centre, and protect local people and businesses.
“Our communities have made it clear to us that they do not want this kind of violence in their city and we will continue to work with them to bring anybody who commits acts of crime or anti-social behaviour to justice as soon as possible.”
Earlier @brumpolice tweeted: “We are aware of unsubstantiated messages on Twitter, Facebook and BBM about disorder at 6pm in Birmingham this evening……
……We have not seen any incidents, but will have extra officers on patrol in the centre and suburbs this evening. Thank you.”