ANKARA, June 3 (Reuters) - Kyiv's ambassador to Ankara said on Friday Turkish buyers were among those receiving grain that Russia stole from Ukraine, adding he has sought Turkey's help to identify and capture individuals responsible for the shipments.

Russia and Ukraine account for nearly a third of global wheat supplies, while Russia also heavily exports fertilizer and Ukraine corn and sunflower oil. But Ukrainian grain shipments from its Black Sea ports have stalled since Russia invaded, with some 20 million tonnes of grain stuck.