China has insisted it will not allow corruption to infect its huge earthquake reconstruction effort.
Billions of dollars have flowed into China from around the world to help survivors of the devastating 12 May quake.
China's government has also earmarked $10bn for reconstruction efforts this year in its southwestern province of Sichuan, with more due next year.
Accusations of shoddy construction quickly emerged after the quake, which killed more than 69,000 people, while state press has reported scams involving fake charity collections and diversions of aid supplies.
Reports emerged later of diverted aid supplies and scams being launched to grab a piece of the pie.
Four days after the quake, police said they had broken up a gang of eight people accused of sending fake cellphone messages asking for donations.
In the quake-devastated city of Mianyang, the People's Daily reported tents being used by people whose homes had not been destroyed.
In Deyang, government officials were found hiding cases of milk, biscuits and drinks in a shop run by their relatives, a website reported, sparking a near-riot by thousands of angry victims.
Another case involved a policeman in Chengdu, capital of Sichuan province, who was accused of commandeering refugee tents.
In an indication of the concern, China's media has questioned top officials at press conferences about such reports.
With the eyes of the world on the relief effort, the government has warned that any corruption will be dealt with harshly, and a new set of guidelines on reconstruction has stressed transparency.
