"The Black Sea Fleet serviceman, who was brutally beaten while returning home, has died in hospital," the source said.
The official said the 28-year-old sailor, known only as Igor, died on Tuesday night, adding that no information had been released on the attack because local authorities wanted to keep the incident from the media.
The attack occurred when the sailor asked three men, who were drinking outside his home, to be quiet. "However, the men responded aggressively by beating him to death," a local police source said.
The victim managed to make it back to his flat where he lost consciousness. His wife found her husband, in a critical state, the next morning.
Three local construction workers were detained on suspicion of carrying out the attack. A criminal case has been opened.
