"The Government at this point sees no reason to be party to a non functional agreement," Yapa said.
"If you take the present set up I don't think the government can speak to the LTTE now. But...if they decide to lay down their arms and come talk with us, the government can reconsider it."
On Wednesday, the main opposition United National Party, which signed the 2002 truce deal with the Tigers, said it was not opposed to the government's decision to pull out of the ceasefire agreement.
It said circumstances had changed since the truce was signed and that the agreement had become a dead letter anyway.
The truce has existed only on paper during much of the agreement's existence