The defensive system of the city has been damaged, said Chu, adding that the findings have revealed the layout of the city and also provided new evidence which will be very helpful for research into ethnic minorities in ancient times.
The Ministry of Ecology and Environment also released a statement on Wednesday urging the government of Linfen to "strictly investigate" the wrongdoings. It said it would investigate and determine punishment, along with the China Securities Regulatory Commission.
Lyu Jianjiang died on Dec 1 in Shijiazhuang, Hebei province, after suffering a heart attack believed to have been brought on by overwork. He was just 47.
More than 1,500 people attended his funeral, most of whom will remember Lyu for his readiness to offer assistance in any circumstances, even with issues that had nothing to do with his duties as a police officer.
They said village officials had reached a secret agreement with Sanwei Group to dispose of the waste in return for personal gain, and unhappy residents had been intimidated or physically assaulted.
RIYADH -- Saudi King Salman bin Abdulaziz Al Saud ordered on Sunday the creation of specialized anti-corruption units in the public prosecution, Al Arabiya local news reported.