Former clients of Lehman Brothers' European operations voted in favor of a plan to speed up the return of about $11bn (€7.7bn) in frozen client assets, the collapsed bank's European administrator said Tuesday.

The administrator, PricewaterhouseCoopers, said more than 90% of the bank's former clients voted for the plan, a multilateral contract known as a claim-resolution agreement. The agreement governs the basis on which the administrators can return the assets.