Washington in Lockdown

The legislative day came to an early and abrupt end Monday morning after a gunman at the Washington Navy Yard opened fire and killed at least 12 people. It was not immediately known how many more were injured. The gunman is also dead, although it was unclear whether he shot himself or was killed by police.

The Senate was under lock-down for for less than 90 minutes. Confirmation votes on two judicial nominees were rescheduled. The House is on a three-day weekend and not scheduled to meet again until Tuesday.

Monday’s violence was the deadliest mass shooting in the United States since 20 children and six adults were killed at Sandy Hook Elementary School in Newtown, Conn.