OKLAHOMA CITY (AP) — Within an hour after Timothy McVeigh's death Monday, a plaque marking his execution was installed at the museum dedicated to the victims.

It reads: "McVeigh is executed by lethal injection on June 11, 2001, at the federal penitentiary in Terre Haute, Indiana."

The plaque was installed at the museum at the Oklahoma City National Memorial, built on the site where the federal building once stood.

The plaque, part of a timeline, hangs next to a framed copy of the Rocky Mountain News' front page the day McVeigh was convicted in Denver.

The 4-by-8-inch plaque was prepared in advance.

Richard Williams, a bombing survivor who was manager of the federal building, helped hang the plaque, which replaces one that said McVeigh's execution was postponed from May 16 to June 11.

"This is a part of the evolution of the museum," he said. "It's a very significant change in the timeline."