NO CENTRAL HELP: Tamil Nadu government has refused to take any help offered by the Centre in the probe into the twin explosions in a train in Chennai Central railway station and it appears that the state is not treating it as a terror attack "as of now". The Centre had to abort its plans to send in forensic experts and investigators from NSG and NIA to Chennai in the wake of the blasts as the state government, whose Chief Minister J Jayalalithaa is strongly opposed to any interference from Central agencies on the subject of law and order.