NCP on Thursday termed as "terror attack" the twin blasts in the Bangalore-Guwahati Express at the Chennai Central Railway station that left a woman dead.
"It is clear that it is a terror attack. There are terrorists behind it," said Tariq Anwar, NCP General Secretary.
Anwar, who is Union Minister of State for Agriculture, said the incident was being probed by concern agencies and things would be clear in a day or two.
"The process of investigation has begun. Everything will be cleared in one-two days," he said.
Meanwhile, Congress also termed as "unfortunate" the blasts and demanded strict against those responsible.
"The news (of blasts) is unfortunate. The truth should come out before the people. There should be strict action against those who are responsible," Congress leader Rashid Alvi said.
A woman was killed and 14 others injured, two of them critically, when two low-intensity bombs exploded in a span of five minutes on two coaches of the Bangalore-Guwahati train at the Chennai Central Railway station on Thursday.