The last ship to travel under a U.N.-brokered deal that allows the safe Black Sea export of Ukrainian grain left the port of Odesa early on Sunday ahead of a deadline to extend the agreement, according to a Reuters witness and MarineTraffic.com.

The last ship to travel under a U.N.-brokered deal that allows the safe Black Sea export of Ukrainian grain left the port of Odesa early on Sunday ahead of a deadline to extend the agreement, according to a Reuters witness and MarineTraffic.com.

Russia has not agreed to register any new ships since June 27 and the initiative will expire on Monday unless Moscow agrees to extend it.

A United Nations spokesman said on Friday that Secretary-General Antonio Guterres was waiting for a response from Russian President Vladimir Putin on a proposal to extend the deal.

Putin told South African President Cyril Ramaphosa in a phone call on Saturday that commitments to remove obstacles to Russian food and fertiliser exports had yet to be fulfilled, the Kremlin said.