Chinese regulators investigating Wal-Mart store

SHANGHAI, Aug 10 (Reuters) :  Chinese regulators are investigating a Wal-Mart store in the southern city of Shenzhen for food safety violations, the official Xinhua news service reported, based on videos it said were taken by a Wal-Mart employee at one branch.
The US retail giant told Reuters that it had launched its own investigation in response to the video and found no evidence to support its claims, nor had multiple visits by authorities uncovered any wrongdoing.
"We are comfortable saying, based upon this inspection, that none of the alleged activities exists in the store today," Wal-Mart said in a statement.
The voiceover to the video - made by an anonymous person who claimed to have worked for Wal-Mart for seven years - said employees in the store's deli section, operating under the principle of "don't change for a month," would often use cooking oil so old it had turned "black as soy sauce" to cook items like fried chicken for sale to customers.
They would also fry and sell meat that had passed its sell-by date, and sell rice infested with insects, the narrator said, showing footage of black oil in a fryer, expired meat, and worms crawling on rice.
The Xinhua article said no conclusions from the investigation by the Shenzhen Municipal Market Supervisory Administration had been made. Xinhua said Shenzhen authorities were testing samples of oil and meat from the store but results were not yet available.