Ukrainian Foreign Minister Andrii Sybiha said on Tuesday that he held a call with his counterpart in Iran in order to have a “direct conversation” after a sailor was killed in a Ukrainian attack on an Iranian vessel in the Caspian Sea.

Attack on ship in the Caspian on Saturday, which Tehran blamed on Kyiv, killed at least one sailor and wounded another.

Iran has summoned Ukraine’s diplomats after Kyiv bombed an Iranian ship in the Caspian Sea, killing at least one sailor and wounding another.