Assam Chief Minister Tarun Gogoi on Thursday termed the incident of Bordumsa tea estate as "unfortunate", where angry tea labourers had burnt alive their owner on Wednesday.
"The incident was unfortunate and we are investigating the incident," the Assam CM said.
"Top police officials had rushed to the area and started investigation. The security of the tea garden area has also been strengthened," Gogoi said.
At least five people were apprehended by police on Thursday in connection with the incident.
Police are also suspecting the involvement of Maoist rebels in instigating the tea labourers, who burnt two people including the tea garden owner at Bordumsa in Tinsukia district on Wednesday.
"Maoists have been trying to establish their bases in Upper Assam and Arunachal Pradesh," the sources said.
Several organizations of the state had condemned the incident and demanded a high level inquiry and stern action against the culprits.
(Reporting by Hemanta Kumar Nath)