Essex police are hunting a "brainless thief" who stole a mobile phone and then uploaded a selfie to Whatsapp.
The inept and hopelessly vain individual also managed to give away where he lives, reports the Metro.
Investigating officer, detective constable James Smith, said: "The thief has further disclosed, via instant messaging, that he lives in south London.
"We really can't believe that this man has incriminated himself."
The phone belongs to a 12-year-old boy who was robbed near Debden tube station shortly after 11am on Tuesday October 1.
The thief asked for the time and when the boy got his phone out he was threatened and made to hand it over.
The victim's mother was alerted by a notification from Whatsapp that the thief had uploaded a photo.
The suspect is in his early 20s, around 5ft 5ins tall and speaks with a London accent, reports the Essex Guardian.
Anyone with information should contact Loughton police station on 101 or Crimestoppers on 0800 555 111.