(Yicai Global) Aug. 2 -- An in-house anti-corruption campaign at Didi Chuxing, China's leading online ride-hailer, roped in 30 offenders in the first half and led to 29 dismissals and 10 referrals to the authorities for further investigation of alleged illegal activities, the Beijing-based firm said in a report published today.

The abuses involved fraud, infringement of company interests and bribery, including collusion between staff and outsiders to add drivers who did not meet requirements. Employees also fabricated expenses claims. Offenders were fired and their cases handed to the legal authorities. Didi did not disclose how much money was involved in the bribery cases.

Chief Executive Cheng Wei and President Jean Liu shared the report on social media today and pledged to take a zero-tolerance approach to corruption and ensure a fair and just working environment for drivers.

The company began piloting an integrity rewards program in 2017, with cash incentives of up to CNY100,000 (USD14,410) for external partners who report violations by Didi employees and extended the scheme to its own staff early last year. It is an effective risk prevention and control system, the firm added.

A report Didi released earlier this year showed that the company had investigated more than 60 internal violations involving 83 staff last year, eight of whom were referred to the authorities.

According to media reports, Didi has expanded quickly since its inception in 2012, but has accumulated a net loss of CNY39 billion (USD5.7 billion) over six years.