Image copyright Reuters Image caption Ji Jianye has been mayor of Nanjing, a city of about seven million people, since 2010

The mayor of China's eastern city of Nanjing has been sacked, state media say, amid a crackdown on corruption.

Ji Jianye was dismissed from his leadership positions for "suspected serious disciplinary violations", Xinhua news agency said.

It comes two days after the ruling party's corruption watchdog revealed Mr Ji was under investigation.

The anti-corruption drive was launched by Chinese President Xi Jinping after he took office in November last year.

He warned that public anger over corruption threatened the survival of the Communist Party, and promised to pursue "tigers" - top-level officials - as well as "flies".

Correspondents say Mr Ji appears to be one of the most senior targets of the campaign to date.

No details of the case have been revealed, however, state-backed newspaper the 21st Century Business Herald said Mr Ji was investigated over economic corruption and construction projects.

A report on Communist Party mouthpiece People's Daily said Mr Ji's case could involve about 20m yuan ($3.3m, £2m) in funds.

Several high-profile officials have been dismissed in recent months, including the former railways minister and a top economic planner.

A number of senior PetroChina executives are also under investigation.

Nanjing, the capital of Jiangsu province, is home to about seven million people.

Mr Ji has been mayor of Nanjing since January 2010 and was also the city's deputy party secretary, Xinhua said.