May 18 (Reuters) - Russia's TCS Group Holding, which runs online bank Tinkoff, on Wednesday said its net profit had fallen year-on-year and quarter-on-quarter, but declined to disclose specific figures.

Despite so far evading Western sanctions, the lender has endured a turbulent few weeks. TCS founder Oleg Tinkov in April sold his 35% stake in the company to a firm controlled by Russian billionaire Vladimir Potanin, soon after heavily criticising Russia's actions in Ukraine.

(Reporting by Reuters)