According to the Xinhua news service, Chinese regulators are investigating a Walmart store in Shenzhen for food safety violations. The inquiry was reportedly prompted by videos taken by a company employee; however, Walmart officials denied there was any wrongdoing at the store. Walmart officials stated that the company had launched its own investigation in response to the video and found no evidence to support the claims. “We are comfortable saying, based upon this inspection, that none of the alleged activities exists in the store today,” the company said in a statement. A voiceover on the video said that workers in the store’s deli section used the same cooking oil for a month to prepare items such as fried chicken, fried and sold meat after its sell-by date, and sold rice infested with worms. The subsequent investigation by the Shenzhen Municipal Market Supervisory Administration involved testing samples of oil and meat from the store. No final report of investigative findings had yet been made available, the news report stated. The news report quoted local food safety officials saying that there are no laws specifying when frying oil needs to be changed and no legal reason why new oil can’t be added to older oil. There have been several negative news reports in China lately involving major food suppliers headquartered in the U.S. McDonalds and Yum! Brands, which owns Pizza Hut and KFC, were reportedly serving expired meat provided by a U.S.-owned company at their retail outlets in China, and Walmart recently had to recall donkey meat it sold in China after it was found to contain fox DNA.