An Enforcement Directorate team from New Delhi will leave for Mumbai on Wednesday to collect documents and bank statements of the companies, which were allegedly floated by former Jharkhand Chief Minister Madhu Koda and his associates.
ED has also issued summons to certain companies in the financial metropolis whose name cropped up in documents seized by the Income Tax Department during its countrywide searches on the premises Koda and his partners on October 31, official sources said.
The team will also seek additional information on certain hawala transactions through which Koda and the other accused, booked under the Prevention of Money Laundering Act, invested in benami properties abroad, they said.
The Directorate has also sought the help of other economic enforcement agencies in investigations into the over Rs 2000 crore case, sources said.
The enforcement agency is also probing Koda's alleged investments in Bollywood, they added.
Meanwhile, the ED could not question one of Koda's associate Vikas Sinha, currently under its custody, as he was under treatment for kidney stone problem, sources said.