The government will begin taking land from seven property owners so that the Flight 93 memorial can be built in time for the 10th anniversary of the 2001 terrorist attacks, the National Park Service said.

In a a statement obtained by The Associated Press, the park service said it had teamed up with a group representing the victims' families to work with landowners since before 2005 to acquire the land.

In February, government officials and representatives of the 33 passengers and seven crew members killed when the plane crashed on Sept. 11, 2001, pledged to dedicate a memorial on the site by the 10th anniversary. Officials said then that more than 80 percent of the needed land had been secured.