The United States says it supports Ukrainian attacks on Russian military targets on the Black Sea peninsula because it should be demilitarized.
Brief and dark video footage posted alongside the statement showed a small motorboat moving through water at night near a coastline.
Russia loses yet another fighter jet during a training exercise, as Ukraine strikes the Kerch bridge yet again.
Russia's Defense Ministry said that Ukraine had tried unsuccessfully to strike the Crimea Bridge with S-200 rockets, but that no damage or casualties had been caused.
The strike on the bridge, one of three road links between Crimea and mainland Ukraine, allegedly involved an Anglo-French Storm Shadow missile.
A Ukrainian sea drone full of explosives struck a Russian fuel tanker overnight near a bridge linking Russia to annexed Crimea, the second such attack in 24 hours, both sides said on Saturday.
Russian media said the tanker, approaching the Kerch Strait that links the Black Sea and the Sea of Azov, was hit by Ukrainian drones.
The bridge was hit by a fresh attack this month, but Malyuk made no mention of who was behind that one.
Drones hit two non-residential buildings in Moscow at around 4 a.m. (0100 GMT) on Monday, Moscow Mayor Sergei Sobyanin said on his Telegram messaging app.
Russian news agencies quoted the Health Ministry as saying 12 people required medical assistance and four were taken to hospital.