Ukraine's president says an agreement has been reached at a summit with the leaders of Russia, France and Germany on deploying an armed police mission in separatist eastern Ukraine.

Petro Poroshenko's comments were reported by Russian news agencies early Thursday after more than four hours of talks at the summit in Berlin.

The reports did not immediately specify how the proposed mission of police from the Organization for Security and Cooperation in Europe would be deployed. But the OSCE said in May that the group would consider sending such a mission to help conduct elections in the separatist regions of the east.

Poroshenko said that Germany, the current chair of the OSCE, would be asked to present the mission proposal to the organization