MOSCOW, July 24. Officers of the Russian Security Service (FSB) detained in Moscow a 30-year-old Russian woman as she attempted to attack a security officer, the FSB reported on Friday. "The Federal Security Service in Moscow has thwarted the activity of a female Russian national, born in 1996, implicated in a terror plot on instructions from Ukrainian special services," the FSB said. The attacker was detained while she was planting an improvised explosive device under a security officer’s car. The FSB’s investigative department in Moscow and the Moscow Region has opened a criminal case.