The special investigation team (SIT) has completed investigations into one of the three illegal mining cases and is expected to file a chargesheet in the Frost International Ltd case by the end of this week.

SIT has already arrested suspended mines director Arvind Lolienkar, suspended mines department draughtsman Robert Gonsalves and Frost International's operations manager Subroto Barik. "We will file the chargesheet on Saturday," said an SIT senior officer.