The killing of a senior Russian general in a bombing outside his apartment building in Moscow was the boldest assassination yet of a top military officer and it again brought the war in Ukraine to the streets of the capital.

(CNN) - Moscow police said Wednesday they had made an arrest in the headline-grabbing murder of a Russian Instagram star, according to a statement released by the Russian Ministry of Interior (MVD). Russian law enforcement statements did not name the victim, but Russian state television channel Rossiya 24 and multiple Russian news outlets identified her as Yekaterina Semochkina, who used the online pseudonym Yekaterina Karaglanova and who was best known for the Instagram handle @katti_loves_life. According to her Instagram profile, Semochkina was a dermatologist who was widely travelled. Her Instagram account -- which has 92,000 followers -- featured glamour shots of her visiting resorts and exotic vacation spots. Her final post on Instagram featured a photo of her holding a glass of wine and posing poolside.