Russia has detained a male Ukrainian 'agent', 19, who allegedly posed as a 'granny' in a bid to assassinate a top defence plant official.The 'boom-mobileer' collected an bomb stashed in a cemetery in St Petersburg, according to the FSB security service.
The man then changed into the clothes of an 'elderly woman' to plant the bomb on the boss of a Russian arms plant.
The car had been monitored by two women members of the alleged spy ring - one a hairdresser, the other a groomer, said the FSB.
When the saboteur 'dressed as a babushka [granny]' attached the bomb to the underside of the victim's car, he was apprehended by intelligence officers.
The two women were detained on the way to the airport.
In video footage shared by the FSB, officers are seen arresting a person in a long skirt and headscarf.
Investigators said the detainees acted 'on the instructions of a supervisor associated with the Main Intelligence Directorate of the Ministry of Defense of Ukraine.'