Detectives in London are appealing to find a man who has been approaching young children.
Officers are releasing a CCTV image of the suspect who has approached young children and shown them pornographic images on a mobile device.
Police are investigating a number of offences, the first of which happened in March 2017.
All offences occurred in the Regents Park Estate, Camden.
The actions of the man have caused both the victims and their families a great deal of distress.
He is described as white, medium build and is believed to be aged in his 40s.
Detective Sergeant Stephen Masterson said: “These offences are causing children and their families upset and worry and must be stopped. I would strongly urge you to contact police if you know the identity of the man concerned or have any relevant information; anything you tell us will be treated in confidence.”
Any witnesses or anyone with any information is asked to call detectives at Holborn on 07833 973567 or contact via Twitter @MetCC.
To give information anonymously contact Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org.