The OSCE chief said Monday, April 20, a truce was holding in a key village in eastern Ukraine and urged rival sides to "embrace a good chance for peace" in the war-torn region, AFP reports.

"The news this morning is that our people, our monitors have brokered a truce in Shyrokyne, down near Mariupol," OSCE secretary general Lamberto Zannier said.

"And this truce seems to be holding," he told AFP in an interview during a visit to Lithuania's capital Vilnius.

The Organization for Security and Cooperation in Europe sent a monitoring mission to Ukraine in March 2014.

Close to the strategic port of Mariupol, Shyrokyne has been the latest flashpoint in a year-long conflict that has left more than 6,000 people dead.

Zannier said there were still challenges ahead to secure peace but added that "all in all the situation is better than it was few weeks back".

"There is a good chance for peace at this moment and we need to invest as much as we can in this. But there is always a risk of relapse in the conflict," Zannier said.

In February, leaders of France, Germany, Russia and Ukraine brokered the so-called Minsk II truce between pro-Russian rebels and Ukrainian government forces in the east of the former Soviet state.

"Heavy weapons have been largely withdrawn" from the agreed truce line in the conflict zone, Zannier said, adding that the focus could shift on "withdrawing other categories of smaller weapons because they are still actively used in this violations of the ceasefire".

He said the number of its observers in Ukraine would increase to "at least 600 by the beginning of the summer" from the current level below 500.

Zannier was in Vilnius to attend an international conference focused on the role of women in international peace and security.