Babu, who is contesting the May 16 assembly polls from Chavara seat, suffered injuries on his right hand in the incident that occurred at Chavara yesterday.
He was immediately rushed to a private hospital and was later discharged. LDF candidate Vijayan Pillai, who was also participating in the debate, too was injured and has been hospitalised.
As the debate over drinking water shortage heated up, the participants got agitated after the Minister's response and started hurling stones and chairs.
Shibu Baby John of the RSP is Congress-UDF candidate.
