"On this day in 2011, innocent villagers in Netai were killed by indiscriminate firing," Banerjee wrote on her Twitter handle this morning.
The firing allegedly carried out by CPI(M) workers in Netai had killed nine villagers, including women, and injuring as many as 28 people, on January 7, 2011.
"My homage to the lives lost on that day," Banerjee added.
The CBI is currently investigating the case.