A car exploded on Taras Shevchenko Street in Sevastopol, Crimea. The driver, a Russian serviceman, died from his injuries.
The victim is believed to be captain of the first rank of the Black Sea Fleet of the Russian Navy.
The car exploded as a result of the detonation of an improvised bomb that was attached to the bottom of the vehicle.
A criminal case has been opened into a terrorist act committed against a serviceman, the Russian Investigative Committee said.
According to most recent reports, the victim was identified as Captain of the First Rank of the Black Sea Fleet Valeriy T. The Security Service of Ukraine (SBU) was involved in his death, Ukrainian publication Obshchestvennoye said with reference to a source in the SBU.