Erdogan warns of 'another Chernobyl' after talks in Ukraine

Turkish leader Recep Tayyip Erdogan warned of a nuclear disaster in Ukraine during his first face-to-face talks with President Volodymyr Zelensky since Russia's invasion began, echoing pleas from the UN's chief.

A flare up in fighting around Europe's largest nuclear facility in Russian-controlled southern Ukraine has sparked urgent warnings from world leaders and UN chief Antonio Guterres cautioned during talks with Erdogan that any damage to the plant would be akin to "suicide".

"We are worried. We don't want another Chernobyl," Erdogan said during a press conference in the eastern city of Lviv, during which he also assured the Ukrainian leader that Ankara was a firm ally.

"While continuing our efforts to find a solution, we remain on the side of our Ukraine friends," Erdogan said.

Guterres said he was "gravely concerned" about the situation at the plant and said it had to be demilitarised, adding: "We must tell it like it is -- any potential damage to Zaporizhzhia is suicide".

Erdogan, who has major geopolitical rivalries with the Kremlin but maintains a close working relationship with President Vladimir Putin, met with the Russian leader less than two weeks ago in the Black Sea resort of Sochi.

The Turkish leader along with Guterres were key brokers of a deal inked in Istanbul last month allowing the resumption of grain exports from Ukraine after Russia's invasion blocked essential global supplies.