Police have released CCTV footage of a missing 14-year-old girl from south London who could be in Dartford.

Officers are growing increasingly concerned for the welfare of Riana Reid, who was last seen in the Marble Arch area of the capital at around 7.30pm last Wednesday.

They have now released CCTV footage of her just before she disappeared.

Scroll down for video

Riana, who lives in Croydon, is known to regularly visit the Dartford area.

The last captured CCTV footage police have shows Riana exiting Honour Oak Park national rail station in Lewisham at 8.04pm on Monday, February 15.

A police spokesman said: "She is described as a light-skinned black female, approximately 5ft 3ins to 5ft 4ins tall, with a slim build and shoulder length black hair.

VIDEO: CCTV footage of missing 14-year-old girl

"Riana is known to frequent the Croydon, Lewisham, Dartford and central London areas."

Anyone with information on Riana's whereabouts are urged to call police on 101 or Missing People on 116000, quoting police reference number 16MIS007567.