The Enforcement Directorate (ED) arrested West Bengal police officer Ashok Mishra in connection with the coal pilferage case, officials said on Sunday.
Mishra, the inspector-in-charge of the Bankura police station, was arrested on Saturday night from Delhi, they said.
He is alleged to have links with Anup Majhi, alias Lala, who is considered to be the kingpin of the scam, sources said.
The agency had earlier arrested Bikash Mishra, the brother of Trinamool Congress youth leader Binay Mishra, in connection with the case.
Binay Mishra has been evading interrogation, following which a look-out circular was issued against him, officials said.
