Terming the attack on the Rajdhani Express as an "unforgivable" crime, Orissa Chief Minister Naveen Patnaik on Tuesday said the activists had put hundreds of people including women and children in trouble.
"State governments, the Union Home ministry and Railways need to take extra care to ensure that such incidents do not occur in future," Patnaik told reporters in Bhubaneswar.
He said both Union Home Minister P Chidambaram and Railway Minister Mamata Banerjee informed him about the safety of passengers.
Patnaik, who also took up the matter with Prime Minister Manmohan Singh besides West Bengal Chief Minister Buddhadeb Bhattacharjee, said "The time has come for combating the Maoist menace unitedly."
"They are ruthless, anti-national and criminal. Therefore, I think, there should be no idea of negotiation with them. They are responsible for violence every day," he said.