Police have reissued an appeal for help in tracing a Watford teenager who has now been missing for almost five weeks.

Deri Tomas-Kawumba was reported missing from his home on February 19 and police believe he may still be in the Watford area.

The 15-year-old - who speaks with a French accent - is described as black, of thin build with a brown afro hairstyle.

He was wearing a dark navy coat the last time he was seen, police said.

Contact police on the 101 enquiry line with any information about the whereabouts of Deri.