Wagner Group boss Yevgeny Prigozhin was buried, absent any public display or pomp, on Tuesday in a cemetery in St. Petersburg, local media outlets reported.
Earlier on Friday, Russia said its naval base at Novorossiysk was attacked by sea drones overnight. A Ukrainian official said a Russian warship was damaged.
The Biden administration agreed in May to allow allies to send U.S.-made F-16 fighter jets to Ukraine. Kyiv and Kherson came under attack, officials said.
Moscow-City, a complex of skyscrapers in the Russian capital, has become a repeat target as senior Ukrainian officials warn Russians to expect more attacks.