The rebel Liberation Tigers of Tamil Eelam (LTTE) also called on Norwegian peace monitors to step and check the frontlines, the pro-rebel Tamilnet.
com website reported.
"We have reliable military intelligence that suggests that the Sri Lanka military is in full preparation to launch offensive operations into our territory," the LTTE's political wing leader S.
P. Thamilselvan was quoted as saying.
"We want to ensure that we are not blamed for the outbreak of war as consequence to any Sri Lankan offensive," Thamilselvan said.
The area saw heavy fighting in August, which Nordic peace monitors said the Tigers initiated.
After two weeks, the military regained territory lost to the guerrillas following intense fighting that claimed hundreds of lives of both sides.
There was no immediate reaction from the military to the latest LTTE allegations, but the defence ministry has maintained that it was engaged only in defensive operations.
The Tiger charge also followed heavy fighting in the ea