Santosh Vishwakarma and his nephew Nikhel, who beat the JE Karmakar Varathe to death were arrested, Superintendent of Police (South) Anshuman Singh told PTI.
Santosh, hailing from Sagar district along with Nikhel went to MPCPDCL office in Chandbad under Bajaria Police Station to settle the alleged inflated bill issue, he added.
Santosh had an altercation with a clerk saying Nikhel, who is staying here had been handed an inflated electricity monthly bill which should be reduced, the SP said.
A heated argument took place between the JE and the duo following which they punched and thrashed Karmakar, he said.
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Karmakar writhing in pain vomited and was rushed to Shakir Ali hospital where doctors advised that he be taken to state government-run Hamadia hospital, Singh added.
As per the official, on reaching the Hamadia hospital, the doctors declared him brought dead.
"May be he died after sustaining some injury to his private parts," he said.
Police said the body has been sent for post-mortem.
Meanwhile, MPCPDCL Chairman and Managing Director (CMD) Vivek Porwal said he was on his way to Bhopal from Jabalpur district.
All help will be provided to Karmakar's family, the CMD said.
In recent times, this is the second murder that has taken place in the MPCPDCL office.
In December 2012, a 52-year-old MPCPDCL woman clerk Meera Ahuja was murdered by sharp-edged weapons and Rs 2 lakh was looted from the company's office under Koh-e-Fiza Station area.