Hounslow Police have warned parents and children to stay alert after two youngsters were approached by a stranger in a blue car within days in Feltham.
In the first incident, an 11-year-old was approached by a white man in Raleigh Road, Feltham, on January 14, at about 4.45pm.
Two days later, a 15-year-old boy was approached by a man matching his description in Princes Road, Feltham, at about 8am.
Officers from Feltham Safer Neighbourhood Team (SNT) advised parents to 'remain vigilant' and 'reiterate to their children not to speak to strangers'.
Anyone with information, or who is aware of any similar incidents, is asked to call Hounslow Police on 020 8247 6160 or Crimestoppers on 0800 555 111