BEIJING, China (CNN) -- Corruption and mistresses don't make good bedfellows.
Authorities in southern China are using information obtained from mistresses of government officials to crack down on corruption, state media reported Thursday.
At least 80 percent of government officials arrested for corruption in the city of Dongguan in Guangdong province were exposed thanks to their mistresses, the China Daily said.
They "gave us important information that we did not possess," Zhou Yuefeng, deputy director of Dongguan's anti-graft bureau, told the state-run newspaper.
Beijing has been trying to rein in corruption for several years. A law that went into effect last year mandates that government officials found to have mistresses be dismissed from their posts.
In recent years, the country has seen several highly publicized corruption cases involving officials who steal -- in part to provide for their mistresses.
Besides mistresses, the officials who were arrested in Dongguan were accepting bribes, the daily said.