WASHINGTON, D.C.: Both the White House and Pentagon said Monday they would look into why President Joe Biden and other top officials weren't informed for days that Defense Secretary Lloyd Austin had been hospitalized. A Pentagon spokesman pointed to one reason: A key staffer was out sick with the flu.

Even as the Biden administration pledged to look into what rules or procedures weren't followed, it maintained its silence about why Austin has been hospitalized for a week. Some Republicans have demanded Austin's resignation, but the Pentagon said he has no plans to step down.