The six have been indicted on charges of causing intentional harm, The Wall Street Journal reported Wednesday.
Yu Qiyi, the chief engineer of a state-owned company, the Wenzhou Industry Investment Group, allegedly drowned after having his head repeatedly thrust into a bucket of ice water.
The defendants include five employees from the Wenzhou Party Discipline Inspection Commission and an officer with the local prosecutor's office, the South China Morning Post reported.
Yu's family began an online campaign soon after his widow was notified April 9 of his death and was told it was accidental. The family posted photographs showing his body covered with bruises, pressing prosecutors to order an autopsy that showed he died of respiratory failure.
The widow said she last saw her husband March 1 when he put her on a plane from Beijing to Wenzhou. She said she was told a few days later he was the subject of a disciplinary investigation.
Gal Gadot cast as Wonder Woman for 'Batman vs. Superman'
Beyonce flaunts bikini body, Blue Ivy in vacation pics