 As it was the season of Bihu, the Chutia army took it to be a sign that re-enforcements had arrived from other parts and that it was a sign of victory, thinking the Ahoms were chased out.So, thinking the drum beats to be a signal of victory they came down to the lower hills where the enemies were hiding.Another former Chutia commander named Gajraj Borua who had sided with the Ahoms showed the enemies the exact way to the location where the king was hiding.