sentences:  Palestinian civilians from the refugee camp were finally able to flee the fighting after Fatah al-Islam declared a unilateral truce on 22 May, and the exodus continued on 23 May.Fatah al-Islam remained inside the camp and vowed to fight to the death if attacked.An al-Qaeda military official warned the Lebanese government to stop attacks on the Fatah al-Islam cell, or else "we will tear out your hearts with traps and surround your places with explosive canisters, and target all your businesses, beginning with tourism and ending with other rotten industries... We warn you for the last time, and after it there will only be rivers of blood."