London ? Clothing retailer Gap Inc. said Sunday that it will convene all of its Indian suppliers to “forcefully reiterate” its prohibition on child labor after a British newspaper found children as young as 10 making Gap clothes at a sweatshop in New Delhi.

The Observer newspaper quoted the children as saying they had been sold to the sweatshop by their families in Indian states such as Bihar and West Bengal and would not be allowed to leave until they had repaid that fee.

Some, working as long as 16 hours a day to hand-sew clothing, said they were not being paid because their employer said they were still trainees.

Gap said it first learned of the child labor allegations last week and discovered the sweatshop was being run by a subcontractor that a vendor had hired in violation of Gap’s policies. The product made there will be destroyed so it cannot be sold in Gap stores, company spokesman Bill Chandler said.

Besides its chain of Gap stores, the company also owns Old Navy and Banana Republic and operates more than 3,100 stores in the United States, United Kingdom, Canada, France, Ireland and Japan.