Ukrainian authorities have named Volodymyr Zelenskyy’s powerful former chief of staff as a suspect in a major corruption investigation, a move likely to pile pressure on the president’s office at a sensitive moment in the war with Russia.

Kyiv’s political class was rocked by a wide-ranging probe last year that had fuelled public anger and prompted the ex-top adviser and Zelenskyy’s right-hand man, Andriy Yermak, to resign .

In a statement on Monday, Ukraine’s anti-corruption agencies said the “former head of the Office of the President of Ukraine” was among those suspected of participating in a criminal group that laundered about $10.5m through an elite housing development outside the capital, Kyiv.

The agencies did not name Yermak, in line with Ukrainian law, but he was widely identified by local media.…