Sri Lanka accused the Liberation Tigers of Tamil Eelam of preventing civilians reaching safe zones declared by security forces in the north as the rebels said the Tamil people are being subjected to genocide by the army.
The military says at least 32,000 people have fled the war zone in the Indian Ocean island's northeast, where troops aim to deal a death blow to separatist Liberation Tigers of Tamil Eelam (LTTE) they have cornered there and end a 25-year-old civil war.
The safe zones are an "illusion of security" and the army has repeatedly shelled the areas, the LTTE said yesterday, according to the TamilNet news agency in the north.
On Tuesday, the International Committee of the Red Cross (ICRC) ferried out 240 sick and wounded people by boat from the Tiger-held coastal village of Puttumatalan.
Among those was Sister Mary Colostica, a 74-year-old Catholic nun, who told how she and five other nuns shepherded more than 2,000 civilians from village to village as they tried to escape fighting and shelling.
She said that Tigers barred them from fleeing the 'safety zone' by shooting.
First-hand accounts from the war zone are difficult to get because most civilians who flee are put into military-run camps that are off-limits to outsiders.
The LTTE accused the government of blocking access to the north for aid groups and said the international community should be aware of the "false propaganda of the Sri Lankan state," according to TamilNet.
"So we stayed back with the civilians," she said. They stayed around a makeshift field hospital that had to be moved away from the rapidly advancing fighting, until they hit the shores of the Indian Ocean at Puttumatalan.
The ICRC said 16 patients were killed by artillery fire there on Monday. Another boatload of 160 patients was due to leave Puttumatalan on Thursday, the ICRC said.
Fleeing amid clashes
Sister Mary, who was being treated for shrapnel wounds, described the crisis in the north as worse than what she saw during the 2004 tsunami, which killed about 30,000 people on the island.
"At least 10 to 15 people die a day and no one is there to bury them," she said. "The LTTE fired from close to civilians. We had objected, but that didn't work."
The entire war zone has been sealed off to journalists and most aid workers. Humanitarian agencies estimate about 250,000 people are trapped there.
The government says the number is half of that, while the United Nations is planning for an exodus of 150,000 people.
The Tigers have denied accusations from the government on allegations about keeping civilians inside the war zone to use as fighters.
The Tigers blame the military for civilian deaths.
Sri Lanka's government has also refused calls for a ceasefire but pledged to give civilians safe passage. Both sides deny targeting civilians.
Another 2,000 people reached army-held areas on Wednesday and at least another 200 had come out by Thursday morning, military spokesman Brigadier Udaya Nanayakkara said.
More than 50,000 soldiers are converging on the 175 square km (67 sq miles) pocket still held by the Tigers. Analysts say they have no more than 2,000 guerrillas left and face defeat.
Nanayakkara said that number had shrunk to about 700.
"It can be increased, because the people are still with them and can be forcibly recruited and trained to fight," he said.