TMC general secretary Mukul Roy said Alok Das, Chanchal Banerjee and Tapas Chakraborty, all leaders of Burdwan-Asansol industrial area, were suspended.
"Since allegations have been received against them, they were suspended from the party pending enquiry," Roy told PTI in Kolkata.
The three leaders were also show-caused earlier in the day.
The party's state leadership had sent a two-member to Jamuria to investigate following the Shyam SEL's complaint to the police against those leaders.
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Rudra said the three were show-caused and asked to reply to the notice within five days.
He said when he talked to the plant management, they told him they were getting full support from the state government.
Shyam SEL Assistant General Manager Sumit Chakraborty said, "We do not have any complaint against the state government. We faced problems with certain individuals and we had complaint against them."
When told that the three accused were suspended, Chakraborty said, "It will send positive signal to industrialists."