After being found to have had a leak of customers' personal information which were then sold online, Shanghai YTO Express Logistics Co said later Tuesday that it has reported the case to the police and is conducting an internal investigation, news portal xinhuanet.com reported Wednesday.

Media reports on Tuesday said that YTO Express customers' personal information including names, addresses and phone numbers, were being sold on Chinese e-commerce website taobao.com for about 1 yuan ($0.16) each.