Police are still hunting for a teenager who vanished from her home more than three weeks ago.

Alex Heamen, 14, of Abergavenney Road, Lewes, has still not been found despite numerous appeals from police for her, or anyone who has seen her, to get in touch.

Sussex Police's major crime branch took over the investigation last week and more than 30 officers are trying to trace the teenager.

Hundreds of posters have been put up around Brighton and Hove and police have been following up possible sightings.

They are growing increasingly concerned for her welfare, as she has no access to money, food or clothes.

She has not used her mobile since she sent her mother a text two days after leaving home on September 1 to meet friends in Brighton for the weekend.

She was last seen on September 4 walking along Brighton's Palace Pier with two men.

Alex's mother, Tamsin Leverton, 33, is being supported by a family liaison officer as she waits for news of her only child.

Last week, she made an emotional appeal for her daughter to return home. Alex's grandparents have travelled from Cornwall to Lewes while the search continues.

Police have reiterated Alex is not in any trouble and have urged her to contact someone to let them know she is safe.

She is described as white, 5ft 6in, of medium build with blue eyes and dyed medium brown hair. She was last seen wearing light blue jeans, a white jacket and black boots.

Anyone who thinks they may have seen Alex or know where she may be is asked to contact Sussex Police on 0845 6070999 quoting Operation Warren.