Russia has introduced a temporary ban on vessel movements in and out of the port of Novorossiysk between midnight and 5 a.m. because of Ukrainian drone attacks, three grain industry sources said on Wednesday.

The sources said the order was verbal and that no official document had been sent to shippers. They said the port was functioning as usual outside the restricted nighttime hours, and grain shipments have not been affected.

This comes after the announcement that Russian Foreign Minister Sergei Lavrov and US Secretary of State Marco Rubio agreed to meet on Thursday, something Lavrov said on the sidelines of a forum in Manila.

This is a developing story.