Derbyshire Police have appealed to the public for their help in identifying a man in connection with a series of sexual assaults.
A total of 20 assaults have now taken place across the city centre since the first reported incident in July.
Reports are of a man cycling past women and grabbing them.
Anyone with information relating to the incidents or who recognises the man is asked to contact the police on 101 quoting reference number 18000363317.
You can also contact them via the following methods.
•Facebook – send us a private message to /DerbyshireConstabulary
•Twitter – direct message our contact centre on @DerPolContact
•Website – complete the online contact form www.derbyshire.police.uk/Contact-Us.