The men were reportedly planning to masquerade as members of the Ukrainian armed forces to make their way to the Ukrainian capital.
Ukrainian counter-intelligence says it foiled a possible assassination attempt on President Volodymyr Zelensky.
A group of Russian saboteurs led by a secret service agent was arrested in the city of Uzhhorod in the border area between Ukraine, Slovakia and Hungary, Ukraine’s UNIAN news agency reported.
The group of some 25 men was reportedly also tasked with carrying out acts of sabotage in the government quarters in Ukraine and other parts of the country.
The men were reportedly planning to masquerade as members of the Ukrainian armed forces to make their way to the Ukrainian capital.
The report could not be verified independently.
The Ukrainian government claimed that Russian spy squads tried to get to Kyiv and eliminate Zelensky several times since the beginning of the war.