One person was killed and 19 others were injured during a clash in Burdwan district between followers of the ruling Trinamool Congress and the Opposition CPI(M), police said on Saturday.
The incident took place last night at Kaity Bazar area where local tribals reportedly used bow and arrow during the clash, police said.
TMC supporter Sk Siraj of Alampur, who got injured in the clash, was taken to local hospital where he was declared dead, they said.
Out of the 19 injured, three were admitted to a hospital in Kolkata, while 16 were admitted to Burdwan Medical College and Hospital.
Police raided the area later and so far 20 accused have been arrested.