The police want the public to report any sightings of Jack or information that could assist in locating him.
Officers are appealing for information regarding a missing teenage boy.
Jack Smith, also known as Jack MacCuish, is from the Widmerpool area of Nottingham.
He was reported missing to police on Tuesday 10 September after he travelled to the Loughborough area and did not return back to his address.
Leicestershire Police, said: "The 16-year-old is believed to have been spotted in Loughborough on Saturday 21 September and was wearing a grey tracksuit.
"From enquiries carried out it is believed he remains in the area of Loughborough."
The police want the public to report any sightings of Jack or information that could assist in locating him.
Jack is described as white, 5ft 2ins tall, of a medium build with short brown hair.
You can contact officers with information on 101, quoting incident number 520 of 30 September.
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