Ukraine's front line is relatively calm ahead of high-level EU-mediated gas talks between Kiev and Moscow.
Kiev's security officials say there has been no gunfire after midnight on Ukraine's positions and no Ukrainian soldiers have been killed over the past 24 hours.
Security spokesman Andriy Lysenko however said that eight soldiers were injured after rebels with a tank and grenade launcher shot at Kiev's positions late on Saturday.
The relative quiet in eastern Ukraine has set in following a shaky start a European-brokered peace plan to end fighting that has killed at least 5,800 people since last April.
Both sides have begun to pull back heavy weapons from the front line, with rebels claiming that they will complete the pullback by the end of the weekend.
Monitors from the Organisation for Security and Cooperation in Europe (OSCE) have reported weapons movements on both sides but say it is too early to confirm a full pull-back.
Speaking at the UN Security Council Friday, the OSCE's envoy to Ukraine Heidi Tagliavini said the current situation was at a crossroads where the risk of further escalation remained high despite encouraging signs.
In Kiev, colleagues mourned photojournalist Sergiy Nikolayev from the Ukrainian daily Segodnya.
He died after being hit by a mortar shell in Pisky, a village not far from Donetsk airport which Ukraine's forces ceded to the rebels in January.
The OSCE's media freedom representative Dunja Mujatovic said his death was a "gruesome reminder" of the dire safety conditions for journalists covering the Ukraine conflict. Seven media workers have been killed there since last April, according to the Committee to Protect Journalists.
In Moscow meanwhile Russian investigators detained Ukrainian lawmaker Alexei Goncharenko and questioned him as part of a probe into a fire last May in the southern Ukrainian city of Odessa, where 50 people were killed after clashes between pro-Russia activists and supporters of Kiev.
Goncharenko was later released from police custody and ordered to appear before an administrative tribunal on Monday.
The Ukrainian lawmaker had been in Moscow ahead of a march there Sunday to honour opposition leader Boris Nemtsov, who was gunned down near the Kremlin on Friday.
With the relative hiatus in fighting on the ground, a gas dispute flared up after Russia's Gazprom began direct deliveries to the separatist-held areas in eastern Ukraine and demanded that Kiev pay for them.
Ukraine's national gas company Naftogas stopped pumping gas to the separatist areas last month, saying it could not deliver because of a damaged pipeline, but then adding that deliveries resumed a few hours later.
Russian President Vladimir Putin has accused Ukraine of perpetrating a kind of "genocide" by denying energy to four million people living in territories hit by a humanitarian crisis.
The Kremlin appeared to soften its rhetoric however after the European Union unveiled plans Wednesday for a continent-wide single energy market, with the goal of diversifying the bloc's energy sources and decreasing its reliance on Russian gas.
Talks are set for Monday between energy ministers of Ukraine and Russia together with European Commission vice president Maros Sefcovic.
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