Corruption and bribery cases involving officials connected to major engineering projects have grown by 31 percent annually since 2006, a top anti-corruption official with the city said.

Zhu Xiaoqin, head of the anti-corruption bureau of Beijing People's Procuratorate, told METRO that from 2006, 146 officials - 34 of which are senior officials - in 135 corruption and bribery cases have been charged by the procuratorates.

Among the cases, 101 relate to cases with more than 100,000 yuan. These major cases have seen an average increase of 7.9 percent annually.