AstraZeneca has revealed that its top executive in China, Leon Wang, has been detained by Chinese authorities, after confirming he was under investigation last week.
AstraZeneca's shares have fallen more than 8% on speculation about an anti-corruption probe in China, its second-largest market, wiping around $14 billion off its value.
The head of AstraZeneca's Chinese operations has been placed under investigation by the authorities in Beijing, although the reasons for the probe remain unclear.
