Litex surge seven points clear in Bulgaria
Litex, based in Lovech, a town with a population of just over 40,000, top the standings with 38 points from 16 matches. Second-placed CSKA Sofia host Lokomotiv Plovdiv on Saturday.
French striker Wilfried Niflore converted a penalty, which had to be retaken, after 10 minutes and doubled Litex's lead from close range on the stroke of half-time.
Brazilian winger Tom netted the third five minutes after the interval with Lokomotiv's best chance coming midway through the first half when Martin Kerchev missed a penalty.
The win increased Litex's chances of upsetting the traditional balance of power.
Levski Sofia and CSKA have won nine league titles between them in the last decade.