sentences:  After the skirmish the column crossed the border river through a gas pipeline and ran across the frozen steppe, trying to reach safety before dawn, and a number of Chechen fighters were killed by strafing attacks of Russian Mi-24 helicopters during the pursuit.However, only three or four hostages lost their lives, and some of them escaped in the chaos.A force of between 200 and 300 guerrillas arrived in the area from Chechnya, where rebel fighters grouped under the command of Maksud Ingulbayev (who was ordered by Dudayev).