At least four persons suffered injuries in a clash between Trinamul and BJP supporters at Sitalkuchi on Friday, a day before Cooch Behar votes.

The injured are under treatment at different hospitals. Girindra Nath Burman, the Trinamul candidate of Mathabhanga who was attacked by a group of suspected BJP supporters on Thursday night, is said to be stable now.

In Cooch Behar, a number of violent incidents have been reported across the district as the elections drew near. On Wednesday evening, the convoy of BJP state president Dilip Ghosh was attacked in Sitalkuchi.

On Friday, Trinamul supporters demonstrated in different locations of the district, protesting the attack on their candidate.

“The BJP had organised the attack. We want the police to arrest all the attackers,” said Partha Pratim Roy, the district Trinamul president.

After the attack on Ghosh, the police had sprung into action and arrested 16 persons. Two persons have been arrested in connection with the attack on Burman, police sources said.

Officials of the district administration, who were busy making arrangements to send polling and security persons to 3,229 booths of the district, said 774 polling stations had been identified as critical, among which 208 had been marked vulnerable.

“Altogether, 188 companies of CAPF would be deployed, both in booths and in quick response teams. The state police will also be posted in specific areas,” said an official.

In neighbouring Alipurduar district, polling would be held in 1,726 booths, among which 300 have been marked as sensitive. In total, 98 companies of CAPF would be deployed in the district, said sources.