For Kiev that brought to four the number of soldiers killed in combat since the latest truce went into effect on September 1.
The separatists in eastern Ukraine have also reported a number of casualties in that period as the 29-month-long war in the European Union's backyard drags on at the cost of nearly 9,600 lives.
The leaders of Germany and France helped negotiate a February 2015 peace agreement that was supposed to end fighting and decide the status of the rebel-run regions by the end of last year.
The lack of progress has made it necessary to prolong the so-called Minsk Agreements reached in the Belarussian capital until the start of 2017.
Ukrainian military spokesman Oleksandr Motuzyanyk said the latest deaths occurred in the breakaway provinces of Lugansk and Donetsk.
"Tragically, three Ukrainian servicemen were killed and 15 of our fighters were wounded. One serviceman remains unaccounted for," he told reporters.
The rebels said a battle in the Donetsk region resulted in the death of three of their fighters as well.
It was not immediately clear why he made the announcement more than two weeks after the sides had already agreed to another temporary truce.
The deadly fighting came the day before German Foreign Minister Frank-Walter Steinmeier and his French counterpart Jean-Marc Ayrault were due to arrive in Kiev for talks with Ukrainian officials on ending one of Europe's bloodiest crises since the 1990s Balkans wars.
But some analysts expect little progress to be made.
Ukraine says no meaningful peace talks can be held with the rebels until the government regains control of the eastern portion of its porous border with Russia, which it accuses Moscow of using to supply the separatists with weapons and active troops.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
