Coinciding with the company offering more than 22.7 million shares of common stock to help to pay for the acquisition, Springleaf Holdings acknowledged this week that its intended purchase of fellow subprime institution OneMain Financial Holdings is running into some regulatory hurdles.

In a filing sent to the Securities and Exchange Commission, Springleaf indicated it was notified by the Antitrust Division of the U.S. Department of Justice on March 22, stating that the agency would be reviewing the proposed transaction, which was first announced back on March 2 and included an aggregate purchase price of $4.25 billion in cash.

Company officials explained that DOJ would be reviewing the proposed acquisition from an antitrust perspective. “We and OneMain subsequently met with, and provided information to, the DOJ staff on a voluntary basis,” officials continued. “Thereafter, both parties received a voluntary request for information from the DOJ.”

Then a new development came on Tuesday. Springleaf revealed in the SEC filing that the DOJ also issued a civil investigative demand (CID) to both Springleaf and OneMain.

“The voluntary request for information and the CID seek documentary materials and information regarding the proposed acquisition and the marketplace in which both parties operate,” Springleaf officials said. “We are in the process of responding to the DOJ’s request, and we intend to work cooperatively with the DOJ to resolve any questions that the DOJ may raise concerning the proposed acquisition.”

But that’s not all Springleaf acknowledged in SEC paperwork. The company indicated it also has been contacted by the Colorado attorney general’s office. Why?

The company said that Colorado officials, “along with other state attorneys general, may seek to coordinate their antitrust review of the proposed acquisition with the DOJ.”

Springleaf reiterated in its latest SEC document that its purchase of OneMain is expected to close in the third quarter of 2015, “although there can be no assurance that the proposed acquisition will close, or, if it does, when the actual closing will occur.”

On a pro forma basis, as of Sept. 30, the combined subprime finance company would have had $13.96 billion in core consumer net finance receivables. At closing, the combined company is expected to have 1,967 branches across 43 states.