The FSB said the suspected organisers of the attacks were planning to kill a senior defence official using a remotely controlled car bomb.

MOSCOW (AP) — Russia's top security agency said Thursday that it has arrested several suspects accused of involvement in an alleged Ukrainian plot to assassinate senior military officers, an announcement that follows the killing of a top Russian general last week.

The Russian prosecutor’s office said the suspect, a 29-year-old citizen of Uzbekistan, confessed to planting the bomb on the orders of Ukrainian agents.

The Federal Security Service of Russia said a series of assassination attempts had been foiled. Four Russian citizens have been arrested.

Russia’s Federal Security Service (FSB) said it thwarted multiple assassination plots allegedly orchestrated by Ukrainian intelligence and carried out by Russian citizens recruited to execute the attacks,