An unspecified number of police officials are under investigation in connection with a wrongful execution case blamed on a deputy police chief in Inner Mongolia, according to Sunday's Legal Evening News.
Feng Zhiming, deputy police chief in Hohhot, capital of the autonomous region, was arrested on December 17 last year, two days after a teenager was declared innocent of a rape and murder case in 1996.
Feng is charged with duty-related crimes which include bribery, misconduct and dereliction of duty.
Among those now under investigation are a police station chief and Feng's wife, the newspaper said.
On April 19, 1996, Huugjilt, then 18, found a woman's body in a public toilet and, from the outset, was regarded as the chief suspect by Feng, then a deputy district police chief.
Despite a lack of evidence, Huugjilt was sentenced to death in June. In court, he said police had tortured him to extract a confession.
After Huugjilt's execution, Feng and his colleagues won rewards and promotion for their swift "resolution" of the case.
In 2005, serial killer Zhao Zhihong confessed to the murder that led to Huugjilt's death. Last November, the case was reviewed and Huugjilt cleared.