Pig carcasses found floating in Hunan river

Latest incident of dead animals in waterway raises concerns about disposal procedures

Scores of dead pigs have been retrieved from a Central China waterway, just weeks after thousands were discovered in Shanghai's Huangpu River.

Authorities have been pulling the carcasses from Liuyang River in Hunan province since Saturday. More than 70 pigs had been retrieved as of Sunday, but an official figure has yet to be released.