"We are working with the OSCE for a new regulation to keep the ceasefire," Steinmeier told reporters in Oslo, Reuters wrote.

"We are now in preparation which will allow us to soon meet again on the foreign ministers' level," he said.

Read alsoKlimkin sees Ukraine as point of no return for OSCESteinmeier said implementation of the Minsk accord by Russia and Ukraine remained disappointing, and the security situation in eastern Ukraine was "really insufficient."