With building materials saved from the ambush, two castles were built outside Antioch to prevent the large-scale importation of food. One was on a hill above Bohemond's camp, guarded by the men of Hugh the Great, the other on a hill outside the west gate of Antioch. No crusader wanted the responsibility of manning this fort: Tancred was chosen, but pleaded poverty. Therefore Raymond gave him 300 marks for building the fort and 40 per month for its maintainance. Tancred successfully kept it up till the end of the siege. A noble Turkish youth was captured, and negotiations began to win entry to Antioch as his ransom. However Shams al-Dawla, son of Yaghi Siyan, got to hear of the affair and stopped it. The youth was therefore tortured and executed. The forts and the defat of the army of Ridwan raised the spectre of starvation in the city. Yaghi Siyan commandeered half of all private grain supplies for military use