Russian officials said on Sunday that Ukraine had attacked the Russian-annexed Crimean peninsula with five U.S.-supplied missiles, killing at least three people including two children and injuring 100 more.

The Russian Defence Ministry said four of the U.S.-delivered Army Tactical Missile System (ATACMS) missiles, equipped with cluster warheads, were shot down by air defence systems and the ammunition of a fifth had detonated in mid-air.

Russian-installed authorities said missile fragments fell near a beach on the north side of the city of Sevastopol where locals were holidaying. About a hundred people were injured, Mikhail Razvozhayev, the Russian-installed governor of Sevastopol, said on Telegram.

Television footage on Russian state television showed people running from a beach and some people being carried off on sun loungers.

Reuters was unable to immediately verify battlefield reports from either side. Ukraine has not commented.

Russia annexed Crimea in 2014. The peninsula has been under Moscow control ever since and Russia considers it a part of Russia, though most of the world considers it to be part of Ukraine.

Foreign Ministry spokeswoman Maria Zakharova said Russia intends to seek a response from international organisations to the Ukrainian shelling of Sevastopol, adding that these organisations are “engaged by the West”.

The United States has been supplying the Ukrainian army with longer range ATACMS missiles with a 300-km range since earlier this year.