ZHENGZHOU - Two prison heads and a vice mayor in China have been put under investigation for suspected serious discipline and law violations.

Zhu Yaohui, vice mayor of Dengfeng City in the central province of Henan was in charge of the city's education, health and food safety.

Cao Wushun, head of the Lineng bureau of the prison administration of Shandong Province, and Wang Yaluo, head of Liming Prison in Heilongjiang Province, are being investigated for alleged corruption, local discipline watchdogs announced Friday.

An intense anti-corruption drive is underway in China, targeting both high-ranking "tigers" and low-level "flies".