New Delhi, May 14 -- Two national agencies fighting corruption in Ukraine named President Volodymyr Zelenskyy's former chief of staff as an official suspect in a major graft investigation. They said Tuesday that the Ukrainian leader is not under suspicion in the case.

Andriy Yermak is suspected in an alleged 460-million-hryvnia ($10.5 million) money-laundering scheme, the agencies announced late Monday.

Meanwhile, Zelenskyy met with the CEO of Palantir Technologies, part of Ukraine's growing cooperation with the U.S. defense sector, as a three-day U.S.-brokered ceasefire that decreased the fighting but failed to stop it altogether ended Monday.

Russia's invasion of its neighbor is now in its fifth year, with no sign of a peace settleme...