The agency had been expected to make a decision by Thursday, a year after Juul and other e-cigarette brands, including British American Tobacco Plc's Vuse and Imperial Brands Plc's Blu, faced a deadline to file applications showing their products provided a net benefit to public health.

The agency said on Thursday that it continues to "work expeditiously on the remaining applications," adding many are "in the final stages of review."

(Reporting by Ankur Banerjee in Bengaluru and Chris Kirkham in Los Angeles; Editing by Shailesh Kuber)