A week after recreational marijuana was allowed for sale in Colarado, stores say they have already begun selling out.

Sales of the drug, which is available to anyone aged 21 or older, have already hit $5 million.

Erin Phillips, owner of state dispensary STRAINISE, has seen a "vast demographic" of people visiting the store.

She told BBC Radio 5 live's Up All Night: "The demand has just been huge... some of my competitors have already run out of products. It's amazing."