Kosiniak-Kamysz was responding to reports that Ukrainian anti-corruption authorities had searched the home of Andriy Yermak, President Volodymyr Zelensky’s chief of staff.
Yermak, a key figure in ongoing peace talks with Russia under a US-backed proposal, has pledged full cooperation with investigators.
Speaking at a press briefing in Świnoujście, northwestern Poland, Kosiniak-Kamysz said: "Ukraine is at a difficult moment, and potential corruption at the highest levels does not make current negotiations any easier."
He added: "This is not good news for Poland or Western Europe, for whom the line of security now runs along the Russian-Ukrainian front."
Kosiniak-Kamysz told reporters that Poland’s support for war-torn Ukraine was unwavering, but urged "transparency in anti-corruption efforts," particularly in view of the country’s European Union aspirations.
"We expect explanations. Our strategy of support is unchanged because Ukraine is the frontline of our security," he said.
The searches follow a series of allegations linking Yermak to a sprawling corruption scheme in Ukraine’s energy sector, revealed earlier this month by the National Anti-Corruption Bureau (NABU) and the Special Anti-Corruption Prosecutor’s Office (SAP).
Investigators allege officials received bribes of 10–15 percent of contract values from contractors of Enerhoatom, the state nuclear operator, with around USD 100 million laundered through a Kyiv-based back office.
Other figures implicated include businessman Timur Mindich, a Zelensky associate, who reportedly left the country just hours before earlier searches related to the case.
Ukrainian authorities launched the investigation in August last year, citing charges including organised crime, large-scale money laundering and influencing government decisions illegally.
The scandal has already led to high-level resignations, including Ukraine’s justice minister and two energy ministers, all named in the ongoing investigation.
Kosiniak-Kamysz said he hopes Ukraine’s four-year-long "heroic defence" against Russian aggression is not undermined by corruption allegations, which he warned could be exploited by forces hostile to Kyiv.
(ał/gs)
Source: PAP