Istanbul - (AFP) - The Joint Coordination Center in charge of supervising the implementation of an international agreement signed for the export of Ukrainian grain announced that no movement of cargo ships transporting Ukrainian grain was recorded in the Black Sea on Sunday.

"It was not possible to reach an agreement in the Joint Coordination Center regarding the movement of cargo ships leaving and entering on October 30," the center said in a statement published at night after Moscow announced the suspension of its participation in the agreement, which was signed on July 22 in Istanbul, under the pretext of an attack by marches on its ships.

The center, which includes representatives of Russia, Ukraine, Turkey and the United Nations in Istanbul, stated that it had informed Russia of its "concern over the security of cargo ships" and had conveyed these concerns to the Turkish and Ukrainian delegations.

He added, "The United Nations Coordinator of the Grain Initiative in the Black Sea, Amir Abdullah, informed today (October 29) from the Russian delegation to the Joint Coordination Center of his concerns about the security of the movement of commercial ships."

He added, "Abdullah conveyed (these concerns) to the Turkish and Ukrainian delegations at the joint coordination center."

No official Turkish position has yet been issued on this announcement.

A security source told AFP on Saturday evening that "Turkey has not been officially informed" of the Russian withdrawal.

"The Joint Coordination Center is studying the latest developments, assessing their impact on its operations, and discussing the next stages," he added.

On Saturday, nine cargo ships were able to use the sea passage in the Black Sea, "and there are more than ten other (ships)" ready for that in both directions, according to the center that oversees the implementation of the agreement.

This agreement specifically provides for the inspection of cargo ships traveling the Bosphorus in both directions, whether empty or loaded, by five teams consisting of two inspectors for each of Russia, Ukraine, Turkey and the United Nations.

Since the beginning of this month, Ukraine has criticized the slowness of the inspections, accusing Russia of obstructing the process.

The center estimated during the current week more than 170 the number of cargo ships ready for inspection off Istanbul.

The agreement, which entered into force on August 1, allowed the export of more than nine million tons of grain and other agricultural products from Ukrainian ports, according to the center.