The Enforcement Directorate has suspended an officer for allegedly conducting a shoddy probe into the Hasan Ali Khan case in 2007.
ED officer Amrinder Kumar Singh was suspended on Thursday for conducting a "shoddy probe", ED sources said on Friday.
The agency will also conduct an inquiry against Singh, they said.
The ED is likely to file a charge sheet against Khan and co-accused Kashinath Tapuriah, a Kolkata-based businessman, in a sessions court in Mumbai.
Khan is accused of stashing $8 billion in foreign banks including UBS Bank in Zurich, while Tapuriah is accused of aiding Khan.