Have you seen 14-year-old missing boy Mathew Bizimana?

He was last seen in the City Road area in Bristol and police have now issued an appeal.

on their Twitter page, Avon and Somerset Police have revealed they are 'very worried' about his safety.

"Mathew was last seen by a relative in the City Road area of Bristol on Saturday morning (12 January)," they said.

"He hasn’t been in touch with his family since this time which is out of character and we’re growing concerned for his welfare.

"He’s black, of slim build, about 5ft 5ins, and was last seen wearing beige Puma tracksuit bottoms and a red and blue Tommy Hilfiger top.

"We are very concerned that Mathew may be vulnerable or at risk of exploitation from others.

"If you see Mathew, please call 999 and give the call handler the reference number 5219008511.

"If you know where he may be, please call us on 101 and give the call handler the same reference number."