The House and Senate Sergeant at Arms announced that Capitol Hill will be closed to tours until 8 a.m. ET on May 1.
This is an extension of the restricted access, first put in place on March 12. The tours were originally suspended until the end of March.
"We are taking this temporary action out of concern for the health and safety of congressional employees as well as the public. We appreciate the understanding of those with planned visits interrupted by this necessary, but prudent, decision," the sergeants said in a statement.