Two teenage boys from Newark have been missing for over a week.
Niall Smith, 15, and Dilan Forster-Doyle, 16, were last seen in Newark on the afteroon of 27 April. They were supposed to be picked up from the town that evening but failed to turned up.
The teenagers may be in the Manchester area as Niall was seen in the city on the day he went missing.
Officers and their families are keen to know they are safe and well.
Niall is white, about 5ft 3ins tall, of medium build and has dark brown hair. He was last seen wearing a grey cap, a blue jacket and grey jogging bottoms.
Dilan is white, about 5ft 8ins tall, of slim build and has brown hair. He was wearing a sports cap, grey tracksuit bottoms, black trainers and a jacket.