Russia's Federal Security Service (FSB) on Monday said they believe the murder of Darya Dugina, daughter of philosopher Alexander Dugin, was prepared and carried out by Ukrainian special services, adding that the perpetrator had since fled to Estonia, TASS news agency reported.

Ukraine had earlier denied Kyiv's involvement in the death of Dugina.

Dugina, a journalist and political scientist, was killed in a car bombing outside Moscow on Saturday evening when she was travelling home from an event.