Two boys aged between 13 and 15 caused a terrified pensioner to have chest pains when they robbed him of £10 cash.
The schoolboys pounced on the 67-year-old man as he walked along Oldbrook’s Sutcliffe Avenue late on Tuesday afternoon.
The victim saw people nearby but did not want to call out in case he put them in danger too, say police.
The first and younger offender was white, slim, and wore two stud earrings in his right ear lobe. He was wearing a dark, knitted woollen hat and a dark top.
His accomplice was mixed race and of a large build. He was 5ft 6ins tall, around 2ins taller than the other boy, and had short black hair.
Police are keen to catch both boys and also to talk to witnesses who may have seen the robbery, which took place at about 5.45pm.
Detective Constable Samantha Reynolds said: “The victim saw a man and a woman walk from Shackleton Place onto the redway whilst the robbery was occurring.”
She added: “The victim did not call out as he did not want to put the couple in danger. I am appealing for these people to come forward.”
The pensioner suffered chest pain during and after the robbery and medical attention was sought. He did not attend hospital, say police.
Anyone with information should call Ms Reynolds on 101 or Crimestoppers anonymously on 0800 555 11.
Alternatively they can contact Crimestoppers online at Crimestoppers-uk.org