China's food regulator has visited 600 fast food outlets and food distributors over fears out-of-date or rotten meat is being sold for consumption, the watchdog said in a statement.
Big chains like McDonald's, Starbucks and KFC-parent group Yum Brands Inc have already been dragged into the safety scare.
The investigation comes after five people from OSI Group, the US parent of China-based meat-processing factory at the center of the incident, were arrested. Yum has now severed ties with the group.
More top news
The hunt for a blind WWII veteran's medals has intensified after Crimestoppers offered £5,000 for information which leads to their return.
A Cornish village fundraising to develop a community centre were helped out with a donation from an unlikely source - the Emir of Dubai.
Thursday will be an unsettled day across many northern areas with outbreaks of rain which could be heavy, accompanied by strong winds.