In the continued post-poll violence, 13 political workers of both Trinamool Congress and CPI(M) suffered bullet wounds in different areas in Nandigram on Saturday.
Nine Trinamool Congress workers were hurt in a clash at Jadubarichowk during a 12-hour bandh called by the party to protest against the arrest of three of its supporters following disturbances on polling day on Thursday.
The clash, which saw bombs and guns were freely used by both sides, broke out after a procession was taken out by TC in the area, police said.
In another clash in the afternoon four CPI(M) workers were injured.