The U.S. Food and Drug Administration is planning to ask Sarepta Therapeutics to voluntarily stop all shipments of its gene therapy Elevidys, a source familiar with the matter told Reuters on Friday.

Sarepta Therapeutics (NASDAQ:SRPT) shares plummeted on Friday following reports of a third patient death linked to its gene therapy pipeline this year, further clouding investor confidence despite the company’s recent efforts to provide clarity on its restructuring and FDA label plans.