A top official of Yiliang county in Southwest China's Yunnan province is under investigation, after an online post accused him of violating rules to buy expensive cars and selecting young women to accompany him to drink, Yunnan Information Daily reported on Thursday.

Cao Fuzhong, Party chief of Yiliang, bought more than 10 Toyota cars, each worth 600,000 yuan ($96,300) after he took office, according to a post on tianya.cn on Dec 30.

The post also said Cao spent more than 20 million yuan to organize a basketball game, and invited young women to accompany him to drink in his office, the report said.

The publicity department of Zhaotong city, which administers Yiliang, said on Wednesday that the city is investigating the case and will release the result once it is known, according to the report.

Yiliang was hit by a series of earthquakes, the largest being magnitude-5.7, on Sept 9, leaving 81 dead in the impoverished region.