51.   The Abu Sayyaf guerrillas said early today they had beheaded Guillermo Sobero, one of their three American captives.

52.   Thai officers monitoring the fighting, which is near the northern border with Thailand, say the guerrillas have regained full control over the Anlong Veng area.

53.   The concessions came hours after the guerrillas said the breaking point has been reached in their effort to end the war.

54.   The guerrillas did not say when the incidents took place.

55.   The guerrillas have said they admire Castro and Chavez, and many believe they could play effective roles as mediators.

56.   The guerrillas said all roads leading to the Jaffna lagoon, along the border with the mainland, are choked with thousands of Tamil civilians fleeing the fighting.

57.   The guerrillas said earlier that they would start small, hit-and-run attacks if they lost the hill.

58.   The guerrillas said they were told to retreat but have publicly rejected any suggestion that they would do so.

59.   The guerrillas said they would evaluated the plan by next week.

60.   The guerrillas say the military claim is exaggerated.