MINSK, Belarus (AP) — Sporadic artillery fire hit parts of eastern Ukraine on Saturday, hours after negotiators agreed to create a buffer zone between government troops and pro-Russian militants by halting their advances, pulling back heavy weapons and withdrawing foreign fighters.

Despite positive developments coming out of talks in the Belarusian capital of Minsk and a cease-fire that has been in place since Sept. 5, the fighting between the two sides was still deadly.