It said Lei's case is being fully investigated and the results will be released to the public in time.
Lei's scandal was among the most discussed on the Internet last week, and his immediate sacking met with overwhelming support from netizens.
Web condemnation from the public has led to the removal of at least three officials in recent months. Yang Dacai, former Shaanxi provincial work safety chief, was sacked in September, and Cai Bin, an urban management official in south China's Guangdong Province, was fired in October.
Yang was caught wearing various luxury watches in pictures posted online, while Cai was exposed as the owner of 22 homes. The value of Yang's collection of watches and Cai's homes far exceed their civil servant salaries.
Bullet train attendants receive trainings in China's Shenyang