Alternative lending is popular in China because state-owned banks tend to favour large companies, particularly state-owned enterprises, leaving small and medium-sized companies starved of credit.
The stock of all provisions held against all non-performing loans is lower than in other countries, particularly at the state-owned banks that dominate the industry.
The police are now looking into Mr Srba's possible influence on tenders and property deals, particularly one concerning a building in Moscow owned by the Czech state which had been rented out at a suspiciously low rate.
Telecom companies face particularly acute risks when dealing with governments in countries where they rely on state-owned infrastructure or state-awarded spectrum contracts for their business.