Poland's energy regulatory office (URE) agreed to prolong the current gas prices tariffs of PGNiG (5 PLN, 2,38%) for another quarter until December 31, 2007, URE spokesman Piotr Grzebyk told Interfax Monday. This is the third consecutive quarter when PGNiG will not change its tariffs, after a 10% increase in January. Our view: No change in tariffs was broadly expected by the market, thus neutral trading impact should be expected.