But the government said on Tuesday that "in the absence of an authentic statement" it was unable to respond immediately.

Government demands

Palaniappan Chidambaram, India's Home Minister, said such talks could only be possible if the rebels renounce violence, a demand the Maoists have so far refused.

"I would like a short, simple statement... saying 'We will abjure violence and we are prepared for talks,'" Chidambaram said.


 Q&A: The Maoists of India
 India's battle against the Maoists

"I would like no ifs, no buts and no conditions. Once I receive the (truce offer) statement, I shall consult the prime minister ... and respond promptly."

The Maoists, described by Manmohan Singh, the country's prime minister, as the country's biggest internal security threat, regularly ambush police, and attack railway lines and factories aiming to cripple economic activity.

The government has launched an offensive against the rebels in several areas, but has so far failed to significantly curb their operations.

The Maoists say they are fighting for the rights of the poor but the government regards them as rebels and their political wing is banned from the Indian parliament.

The Maoists have been active in India since the 1960s and, according to Indian intelligence, 22,000 rebels are active in the country.

The rebels are also known as Naxals, after their first armed uprising, which took place in a small village called Naxalbari in the Indian state of West Bengal some 40 years ago.