WASHINGTON – Vice President Biden will visit Ground Zero Saturday to mark the anniversary of the Sept. 11 terror attacks, the White House announced Tuesday.

President Obama will mark the day at a 9/11 ceremony at the Pentagon, spokesman Robert Gibbs said.

First Lady Michelle Obama and Jill Biden, the Vice President’s wife, will travel to Shanksville, Pa., the crash site of the fourth hijacked plane that was believed headed to Washington.

Former First Lady Laura Bush will also attend the Pennsylvania event, where United Flight 93 crashed after passengers stormed the cockpit and attacked the hijackers.

No further details were immediately available.