A bankruptcy judge ruled on Wednesday that Barclays Capital had to comply with requests for information about its whirlwind acquisition of Lehman Brothers last September from Lehman’s creditors, who claim that BarCap enjoyed a windfall of more than $2bn in the deal.

At a hearing on Wednesday morning, Judge James Peck granted a motion made by lawyers representing Lehman’s creditors seeking the power to subpoena records, documents and witnesses involved in the transaction.