Swedish kledinggigant H&M is investigating whether prisoners in China are being used to make clothing, produce, reports The Times. H&M will start the study after a six-year-old British girl who was a cry for help from Chinese prisoner, and found a christmas card from the supermarket chain Tesco.

“We are the foreign prisoners, the Qingpu prison, forced against our will to work. Please Help us and be a light to a human rights organization in the year there was the christmas card and read it.

The card was sent to you by the Qingpu prison in Shanghai. The British ex-journalist Peter Humprey, who is 23 months in this prison, then moved to the British media, to make inspections of the jail by default. He said that he and other prisoners were forced to teach to produce of different high street brands such as H&M and C&A.

H&M, told The Times that the company’s Chinese suppliers have been told not the use of captives in the production of clothing. In addition, it has launched an investigation.

A spokesman for the Chinese ministry of Foreign Affairs to contradict to the reports at The Guardian, and says that foreign prisoners are not being forced to work.