The Washington Monument is closed again because of elevator problems.

The monument was closed Sunday and the National Park Service announced on Twitter on Sunday night that the monument would remain closed Monday morning for repairs to its elevator power supply. The park service says the monument will reopen as soon as repairs are complete.

The monument has been closed several times in recent months because of elevator issues — most recently in early April, when the elevator broke down twice in one week. In those cases, people were visiting the monument at the time and had to walk down hundreds of stairs.