Moscow Mayor Sergei Sobyanin on Sunday declared the bomb attack that killed the daughter of prominent Russian nationalist Igor Dugin a "terrorist act."

The explosion on Saturday evening at the Tsargrad media center's popular "Explosion" restaurant in Moscow killed Darya Dugina and injured at least 12 others, according to preliminary reports. The restaurant is reportedly owned by Dugin himself.

Sobyanin offered his condolences to Dugina's family and friends in a Telegram post, stating that she was killed in a "terrorist act."