An arrest warrant was approved on Tuesday for nine members of a gang who killed a mentally-disabled man and then used his death as a pretext to extort money from a mine boss.

Prosecutors said that seven members of the gang were charged with intentional homicide, and two others, including the lone female suspect, surnamed Ri, were accused of fraud.

Prosecutors in East China's Jiangxi province said that five suspects, including the leader of the gang, surnamed Lu, bought a young man with mental-health problems for 5,200 yuan ($800) from a human trafficker in March.

The woman suspect Ri helped fabricate fake identification for the man, according to Dongxiang county police.

With the documents, the five suspects took him to apply for a job at the Dongxiang County Lead and Zinc Mining Co Ltd, media reports said.

On March 11, only a few days after getting injury insurance, two suspects, surnamed Zhang and Yang, took the young man to a 37-meter-deep vent and pushed him down.

He died on the way to hospital.