Boeing Co has halted deliveries of its 787 Dreamliners, adding fresh delays for customers following a recent five-month delivery suspension due to production problems, the Wall Street Journal reported.

Federal air-safety regulators have requested more information about the U.S. planemaker's plans to address the previously identified quality lapses, the report said, citing people familiar with the matter.

It was not clear how long the halt might last, according to the report.

Boeing did not immediately respond to a Reuters request for comment.

Share of the company were down 1.1% in premarket trading.

Two key U.S. lawmakers said last week they were seeking records from Boeing and the Federal Aviation Administration on production issues involving the 737 MAX and 787 Dreamliner.

The move came after multiple issues recently emerged regarding the 737 MAX and the 787, including electrical problems and the presence of foreign object debris in newly manufactured aircraft.