The Special Investigation Team, SIT, on black money has sought details of all major cases of tax evasion and criminal financial fraud being probed by various investigative agencies .Official sources said, the SIT headed by retired Supreme Court Justice M B Shah has asked the 11 departments on its panel to furnish fine details of these cases and the status of their probes, including any problems being faced by investigators in taking the cases forward for prosecution or penalty. The sources added that the SIT has asked for the data in order to understand the trends and magnitude of the menace of black money and generation of illegal funds in the country.