Merkel said it on the EU summit, Censor.NET reports, citing the Associated Press.
Merkel stressed the importance for Russia to show its commitments "in the coming hours," saying that Germany will "have to decide how we will further proceed" on possible sanctions against Russia after a meeting with Poroshenko on Friday.
EU leaders will be meeting Thursday evening in Ypres and Friday in Brussels, and will weigh the need to impose new sanctions on Russia over its actions in Ukraine. EU officials have said tougher economic sanctions have been prepared and are ready for use.
Read also: Merkel Threatens Russia with New Sanctions: Progress in Ukraine Is too Slow
Speaking at the Parliamentary Assembly of the Council of Europe in Strasbourg on Thursday, Poroshenko called for Moscow to support his peace plan with deeds and, specifically, prevent armed separatists from crossing the Russian border into Ukraine.
Putin and Merkel had a telephone conversation on Thursday, discussing "the need to extend the cease-fire" in Ukraine and release people held by armed rebels in eastern Ukraine, the Kremlin said.