At this time there was a secret conspiracy entered into by many of Carvajal's followers, with the intention of putting him to death out of revenge for his harsh and tyrannical conduct towards them, and one Pedro de Avendano, his secretary, in whom he reposed entire confidence was the principal ringleader of the conspirators. To facilitate the execution of this enterprize, Avendano, sent a message by a clever fellow of an Indian to give Mendoza notice of the intentions of the conspirators, and to request he would make an attack upon Carvajal's camp in the course of the night, in the confusion attendant upon which he and the other conspirators might have an opportunity of executing their intended plot. Mendoza had previously determined upon withdrawing about four or five leagues from Pocona, to a level plain in which his cavalry would be able to act with much advantage. But on receiving the message of Avendano, he ordered his men to hold themselves in readiness to attack the camp of Carvajal at the going down of the moon, preferring the obscurity of night in order to avoid the danger of the more numerous firearms of the enemy. At that time he advanced in good order towards the enemy, sending some scouts in advance, who made prisoner of one of Carvajal's soldiers. After interrogating this man, they advanced to the openings of the wall which surrounded the camp, which they found guarded by some musqueteers and pikemen. Mendoza made a brisk attack, but was bravely resisted by the enemy, and so great was the confusion and noise that it was impossible to enter upon any parley, as no one could be heard by reason of the continual firing and the shouts of the combatants.