City authorities said that the harbour was 'temporarily' closed to boats and ferries and urged people 'not to panic'. The city's services were on 'alert', but he claimed no 'civilian infrastructure' had been damaged. 'Massive' attack - Mikhail Razvozhayev, the Moscow-installed governor of Sevastopol, said Saturday's drone attack was the 'most massive' the peninsula had seen. Russia had recently criticised the deal, saying its own grain exports have suffered due to Western sanctions. Moscow's military said ships targeted at their Crimean base were involved in a UN-brokered deal to allow the export of Ukrainian grain. The British defence ministry said this 'invented story says more about arguments going on inside the Russian Government than it does about the West'. Britain strongly rebutted both claims, saying 'the Russian Ministry of Defence is resorting to peddling false claims of an epic scale.' Russia's foreign ministry spokeswoman Maria Zakharova said Saturday Moscow would raise the blasts and the alleged drone attack at the UN Security Council. In a further singling out of the UK - which Moscow sees as one of the most unfriendly Western countries - Russia said the same British unit was involved in explosions on the Nord Stream gas pipelines last month. Moscow's forces alleged British 'specialists', whom they said were based in the southern Ukrainian city of Ochakiv, had helped prepare and train Kyiv to carry out the strike.

The Russian army claimed to have 'destroyed' nine aerial drones and seven maritime ones, in an attack in the port early Saturday.

Sevastopol in Moscow-annexed Crimea, which has been targeted several times in recent months, serves as the headquarters for the fleet and a logistical hub for operations in Ukraine. 'In light of the terrorist act carried out by the Kyiv regime with the participation of British experts against ships of the Black Sea fleet and civilian vessels involved in the security of grain corridors, Russia suspends its participation in the implementation of the agreement on the export of agricultural products from Ukrainian ports,' the Russian defence ministry said on Telegram. The agreement already allowed more than nine million tonnes of Ukrainian grain to be exported and was due to be renewed on November 19. The Turkey and UN-brokered deal to unlock grain exports signed between Russia and Ukraine in July is critical to easing the global food crisis caused by the conflict. Russia made the announcement after its army accused Kyiv earlier Saturday of a 'massive' drone attack on its Black Sea fleet, while Britain bluntly rejected Moscow's claims its specialists were involved. Russia on Saturday suspended its participation in a landmark agreement that allowed vital grain exports from Ukraine, blaming alleged drone attacks on Russian ships in Crimea.

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