GUANGZHOU: The municipal public security bureau here yesterday claimed to have identified nine people allegedly responsible for the recent case of pig-feed poisoning, which has sickened about 70 people in the capital of South China's Guangdong province in the past week.

Seven of the nine suspects have been detained, an official of the bureau said, adding all the suspects were either individual vendors or wholesale sellers, with their businesses in Tianhe, Zengcheng and Baiyun districts.

The bureau said two other suspects were at large, but their trail had been tracked and they "would be brought to justice soon".