The operation also included searches of premises belonging to a member of parliament, reports the Ukrainian newspaper Kyiv Independent.
The suspected criminal organization has operated under the leadership of a current and a former Ukrainian member of parliament, the anti-corruption agency Nabu announced on Telegram.
Sapo, an anti-corruption unit within the prosecution service, is also participating in the operation, authorities announced on Wednesday.
Suspected collaborator
Deputy Chief of Staff Iryna Mudra confirms on social media that her home has been searched.
"I cooperate with the unit and do not oppose their efforts," writes Mudra, who has been responsible for legal reforms in Ukraine.
Zelenskyy announced on Wednesday that he had issued a decree dismissing the deputy chief of staff.
The CEO of the state-owned bank Sense and its board are also reportedly included in the investigation into money laundering, among other things, according to a source cited by Kyiv Independent.
Energy sector identified
Ukraine is rocked by widespread corruption problems. In May, President Volodymyr Zelensky's former chief of staff, Andriy Yermak, one of Ukraine's most powerful men, was arrested on suspicion of money laundering linked to a larger corruption scandal in the energy sector and the state-owned company Energoatom.
Yermak was forced to leave his post in November last year when the scandal broke. The then Energy Minister Herman Halushchenko and several other ministers also resigned at the same time.
The ongoing operation is said to be linked to legal cases involving Halushchenko, including for channeling money to pay bail for the former Minister of Energy.
