Cross FIRs were lodged on Monday in connection with an incident of clash between supporters of CPI candidate from Bihar's Begusarai seat Kanhaiya Kumar and a group of locals, police said.
Two complaints have been lodged by both sides at Gadhpura police station about Sunday's clash, which erupted after the former JNU students' union president was shown black flags at Koray village here during a roadshow.
Youths in the group had also raised slogans against Kumar, police said.
Kumar is locked in a triangular fight with BJP candidate and Union minister Giriraj Singh, and RJD's Tanveer Hasan, in the Begusarai Lok Sabha seat, which would vote in fourth phase on April 29.