The Keonjhar police on Saturday arrested four more persons in connection with the extortion and other criminal activities that were busted on Thursday.
With this, the total number of arrested persons rose to 17.
The four were identified as Bablu Patra of Bamebari and Ratikanta Barik, Diburu Ho, TV Rajesh Kumar of Barbil. Sources said all the four arrested are supporters of Champua Independent MlA Sanatan Mahakud.
Now, supporters of Mahakud are fear-stricken and most of them have gone underground, sources said.
Champua IIC Madhabananda Nayak said that nobody would be spared if found involved in the case.