The ED today filed an affidavit in the Bombay high court, in a PIL which alleges that Singh was involved in the alleged financial wrongdoings of Koda.
"In the searches carried out by the ED, no direct evidence which involves any financial linkage between Madhu Koda and Singh has come to light," the affidavit filed by Anil G Wasnik, assistant director, ED, says.
As Koda's alleged wrongdoings are already under investigation, the present PIL, filed by one Sanjay Tiwari, is "premature", the affidavit states.
The PIL has sought constitution of a special investigating team (SIT) to probe alleged accumulation of unaccounted wealth by Singh - a former Maharashtra minister - and his family members.
It alleges that Singh was very close to Koda, who was arrested under Prevention of Money Laundering Act.
Despite the evidence linking them Singh was not questioned, it alleges.
At the last hearing, the Income Tax department and the Anti Corruption Bureau had told the high court that probe into alleged disproportionate assets of Singh -- as alleged by petitioner -- is underway. Next hearing of case is on August 5.