Fighting erupted amid attempts at new cease - fire in eastern Ukraine . Pro - Russian separatists attacked with grenades , weapons fire , Ukrainian officials say . Ukrainian police repelled a separate attack at a house nearby . Kremlin statement says Putin supports a cease - fire .
Violence erupts amid attempts at new cease-fire in eastern Ukraine . Pro-Russian separatists attacked with mortars , weapons fire , Ukrainian officials say . Ukrainian guards repelled a separate attack at a checkpoint nearby . Kremlin statement says Putin supports a cease-fire .