'He brought some anti-socials and tried to scuttle our political programme. Our cadres were only distributing a letter we have sent to President Pratibha Patil against the use of the railways to serve Trinamool's interests,' Roychowdhury told IANS.

Train services resumed after the obstruction was lifted. Two express trains were detained for about one hour, while suburban services were 'severely affected', the railway spokesman said.

Slamming the DYFI for 'vandalising the station' and 'causing hardship to the people by obstructing the tracks', Railway Minister Banerjee said: 'Why are they destroying railway property just because they are opposed to me?'

'Their political fight is with me. What has the railways done? Why are they beating up railway employees?' she asked.

'People will rebuff them. The CPI-M has already been forsaken by the public. Today's events only betray the frustration of the CPI-M,' the Trinamool chief said.