A 14-year-old who was caught downloading music illegally has landed her mother with a demand for £4,000 and the possibility of a prison sentence.

Silvia Price, who's daughter Emily had used file-sharing networks to download 1,400 songs for free, told The Guardian: "I don't know where I'm going to get the money from. I'll have to go to prison because I haven't got that kind of money."

Emily claims she didn't know what she was doing was wrong. "Everyone I know at school does it. I ... didn't know it was wrong," she told The Guardian.

"I think I've been picked on because my computer is on all the time and people have downloaded music from my files," she said.

Because Emily is 14 her mother is legally responsible to pay the penalty. Defending the tactic of targeting the parents of downloaders, BPI spokesman Steve Redmond said: "If we don't demonstrate that copyright law has teeth, we're going to be out of business and countless musicians will lose their livelihood too."

The British Phonographic Industry has organised a nationwide crackdown to stop illegal downloaders in the UK. Last year the Recording Industry Association of America (RIAA) organised a similar crackdown that saw thousands of illegal downloaders appear in court.