Authorities in Ukraine fired two senior cybersecurity officials Monday amid an investigation into alleged embezzlement, according to a statement from a senior Ukrainian cabinet official.

Yurii Shchyhol, the head of the State Service of Special Communications and Information Protection of Ukraine (SSSCIP), and Victor Zhora, his deputy, were fired, the cabinet official Taras Melnychuk wrote on Telegram. Dmytro Makovskyi, the first deputy to Shchyhol, was installed as interim head of the agency.

A spokesperson for Shchyhol disputed that the two men were fired and said that they had resigned in order to let the investigation into allegations of procurement fraud proceed.