Siliguri, April 2 -- West Bengal Chief Minister Mamata Banerjee on Thursday sharpened her attack on the Congress, BJP and other opposition parties while campaigning for Trinamool Congress candidate Chandana Sarkar at Baishnabnagar in Malda, turning the focus on both a recent controversy and the broader electoral battle in the state.

In a strongly worded address, Banerjee blamed a section of Congress leaders for the incident in which seven judges were allegedly confined till late at night, describing it as a "planned provocation" aimed at maligning Bengal. She said the episode had caused serious embarrassment to the state and damaged its image.

"I am deeply hurt. Because of this one incident, Bengal has been insulted," she said.

Even as s...