The Senate went to recess on Monday in response to the shooting at the Washington Navy Yard.

Senate Majority Leader Harry ReidHarry ReidChris Murphy’s profile rises with gun tragedies Republicans are headed for a disappointing end to their year in power Obama's HHS secretary could testify in Menendez trial MORE (D-Nev.) announced that in light of the attack, “we will recess the Senate until tomorrow morning.”

At least 12 people were killed and eight others were wounded in a shooting on Monday at the Naval Sea Systems Command headquarters in Washington, D.C., according to reports. Security around the Capitol was heightened in response to the shooting.

“I was sad to hear about the events here in Washington today,” Reid said. “My sympathies are of course with the families of those who have died.”

Senate Minority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellGun proposal picks up GOP support Children’s health-care bill faces new obstacles Dems see Trump as potential ally on gun reform MORE (R-Ky.) also said he was thinking of the victims.

“We’re all thinking about the victims at the Navy Yard,” McConnell said before Reid closed out Monday’s session.

The Senate will reconvene Tuesday at 10 a.m. Reid postponed two votes on the confirmation of Federal Claims Court judges.