"But recent developments in this context, which infringe fundamental and legal rights of the larger section of citizens, create social upheaval, anarchy, chaos and unrest leading to an adverse law and order situation", it added.
"As a result of adverse publicity from the poultry supply situation in mid-December, China KFC sales experienced a sharp decline, " David Novak, chief executive of Yum said in a statement.
" The central bank said it was "monitoring the situation and is prepared to act as needed to mitigate the adverse effects on the economy arising from the disruptions in financial markets.