Russia says it thwarted Ukrainian plot to kill officer and a blogger

"Russia’s Federal Security Service (FSB) said on Saturday it had foiled a plot by Ukrainian

intelligence services to kill a high-ranking Russian officer and a war blogger. 

According to the FSB, acting on the instructions of the Ukrainian intelligence officer, the Russian citizen retrieved a bomb from a hiding place in Moscow.
The FSB reiterated that the bomb, which was packed with ball bearings, was concealed inside a portable music speaker." MS