A Trinamul activist was attacked with guns, knives and iron rods by his party rivals on Friday in front of his house on Cossipore Road in Ward 1.
Friday's incident was the second such after Wednesday's clash between two Trinamul groups that had left one person severely injured.
Munna Singh was standing outside his house around 8am when Swapan Chakrabarty, a local Trinamul leader, allegedly came with his men. "They attacked me with iron rods and knives. I suffered a hand injury when I tried to protect myself," said Singh, who is known as Anwar Khan's associate in the area.
Khan and Chakrabarty have not been seeing eye to eye ever since the party announced that Sita Jaiswara, supported by Chakrabarty, would contest the polls from the ward.
Since the party had turned down Khan's request for a ticket, he had fielded his brother-in-law as an Independent candidate. A resident of the area said Chakrabarty on Wednesday wanted to teach Khan a lesson as he felt an Independent candidate might split Trinamul votes.
"Singh's family has lodged a complaint with Cossipore police station mentioning Chakrabarty in the FIR. He has been charged under IPC sections related to attempt to murder and under sections of the arms and explosives act," said an officer of Cossipore police station.
On why no action has been taken against Chakrabarty till now, police commissioner Surajit Kar Purkayastha said: "Investigations are on and action would be taken against the guilty."
A senior officer at Lalbazar said the police could not interrogate Chakrabarty because he was "missing". But Metro found Chakrabarty sitting in a local club that has been turned into Trinamul's election office. He said elections on Saturday would be peaceful in Ward 1. But he made it clear that "we will fight our best to resist any attack on us".
A resident said people were worried about possible violence on the day of election. "Chakrabarty is allowed to roam freely even after his name is mentioned in the FIR because the ruling party wants him during the polls."
CPM leader Kanti Ganguly and his son Samya were allegedly assaulted by Trinamul activists in Mukundapur on Friday evening.