Two men on a moped assaulted teenage boys in South Normanton.
At around 3.30pm on Saturday, July 21, three boys were approached by two men on a black moped near the junction of Coronation Drive and Princess Avenue.
A Derbyshire Constabulary spokesperson said: "Two of the boys were assaulted.
"The men made off with property including jewellery and a quantity of cash.
"One is described as wearing a dark grey or black tracksuit with the hood up. The other was wearing a dark hoody."
Anyone with information should call 101 and quote reference numbers 18000343391 and 180003434632 along with the name of the officer dealing with the case, Detective Constable Graham Millar.