Russian Foreign Minister Sergei Lavrov discussed the war in Ukraine with U.S. Secretary of State Marco Rubio Sunday, Russian state media Interfax reported.

“Lavrov and Rubio exchanged views on various initiatives concerning the political settlement of the Ukrainian crisis, including plans to resume direct Russian-Ukrainian talks in Istanbul on June 2,” the Russian Foreign Ministry said in a statement about the call between the two leaders, Interfax reported.

Rubio also “expressed sincere condolences in connection with the victims among civilians as a result of explosions of railway infrastructure in the Bryansk and Kursk regions on June 1,” the readout from the Russian Foreign Ministry said, according to Interfax.

“On the Russian side, it was emphasized that the competent authorities are conducting the most thorough investigation, and the results will be published in the very near future. The perpetrators will definitely be identified and will inevitably suffer the deserved punishment,” the Russian Foreign Ministry said.

State Department spokesperson Tammy Bruce said the call came at Russia’s request and that Rubio “reiterated President Trump’s call for continued direct talks between Russia and Ukraine to achieve a lasting peace.”

-ABC News’ Ellie Kaufman