While a senior Maoist leader was arrested at Barikul in Bankura district of West Bengal late on Friday, an anganwadi worker went missing from Lalgarh in Paschim Medinipur district the same day and is suspected to have been abducted by Maoists.
The decomposed body of a man was recovered from a well in a forest near Lalgarh on Saturday.
The police suspect it could be a case of political killing.
Acting on a tip-off, Maoist leader Kinkar Pal was arrested from Huangana forest in Barikul region of Bankura district by security forces. A single-barrel gun was recovered from him.
According to the police, Pal's association with the left-wing extremists dates back to 1993 when he was a member of the Maoist Communist Centre; he operated in former Bihar and later Jharkhand.
He has several criminal cases pending against him in Jharkhand.
Pal has nine cases of murder and arson lodged against him in Ranibandh and Barikul police stations.