Amy Winehouse's husband Blake Fielder-Civil has been accused of taking heroin while in prison.

Pictures in today's Sun newspaper appear to show Fielder-Civil, who is currently awaiting sentence, 'chasing the dragon' in his Pentonville prison cell.

It's claimed that the photos were taken shortly before Winehouse appeared at the Nelson Mandela concert in Hyde Park last month, where she performed with a heart-shaped hairpiece that said 'Blake'.

Speaking to the newspaper, a prison source said: “Blake takes heroin whenever he can get hold of it. His claims to be clean are a fallacy and it is obvious he remains dependent.

“There is nothing to suggest he won’t carry on when he’s outside and back with Amy. If she takes him back into her life when she is trying to get clean it will be a recipe for disaster.”

Fielder-Civil pleaded guilty to grievous bodily harm and perverting the course of justice charges last month. He is due to be sentenced this month.

(by Jason Gregory)