(Reuters) - Slovak Prime Minister Robert Fico will discuss the end of Russian gas transit through Ukraine with representatives of the European Commission on Jan. 9 in Brussels, Slovakia's government office said on Tuesday.

Slovakia's coalition government will discuss retaliatory measures to take against Ukraine after it halted the flow of Russian gas through its territory to Slovakia, Slovak Prime Minister Robert Fico said on Thursday.

Prime Minister Robert Fico said in a video message that his Smer party would consider cutting electricity supplies to Ukraine, adding that a Slovak delegation would discuss the situation in Brussels next Tuesday.

Slovakia has arranged alternative gas sources and routes, but Fico has argued that the end of Ukraine's transit of Russian gas meant that Slovakia lost its own transit revenue and

Slovakia will consider reciprocal measures against Ukraine such as halting back-up electricity supplies after Jan. 1 if Kyiv, as expected, stops the transit of Russian gas to Slovakia, Prime Minister Robert Fico said on Friday.