In 1144 Joscelin was able to make an alliance with
Kara Arslan, the Artuqid ruler of
Diyarbakır, against the growing power and influence of
Zengi. Joscelin marched out of Edessa with almost his entire army to support Kara Aslan against Aleppo. Zengi, already seeking to take advantage of Fulk's death in 1143, hurried north to besiege Edessa, arriving on November 28. The city had been warned of his arrival and was prepared for a siege, but there was little they could do while Joscelin and the army were elsewhere. The defense of the city was led by the
Latin Archbishop,
Hugh of Edessa, the
Armenian Bishop John, and the
Jacobite Bishop
Basil bar Shumna. John and Basil ensured that no native Christians would desert to Zengi. When Joscelin heard of the siege, he took the army to
Turbessel, knowing that he could not dislodge Zengi without help from the other Crusader states. In Jerusalem, Queen Melisende responded to Joscelin's appeal by sending an army led by
Manasses of Hierges,
Philip of Milly, and
Elinand of Bures. Raymond of Poitiers ignored the call for help, as his army was already occupied against the Byzantine Empire in
Cilicia. Zengi surrounded the entire city, realizing that no army was defending it. He built
siege engines and began to
mine the walls, while his forces were joined by
Kurdish and
Turcoman reinforcements. The inhabitants of Edessa resisted as much as they could but had no experience in
siege warfare; the city's numerous towers remained undefended. They also did not know of counter-mining, and part of the wall near the Gate of the Hours collapsed on 24 December. Zengi's troops rushed into the city, killing all those who were unable to flee to the
citadel. Thousands more were suffocated or trampled to death in the panic, including Archbishop Hugh. Zengi ordered his men to stop the massacre, although all the Latin prisoners that he had taken were executed; the native Christians were allowed to live freely. The citadel was handed over on 26 December. One of Zengi's commanders, Zayn ad-Din Ali Kutchuk, was appointed governor, while Bishop Basil, apparently willing to give his loyalty to whoever ruled the city, was recognized as leader of the Christian population. == Aftermath ==