Developing: Shots Fired on Capitol Hill

There were shots fired outside of the U.S. Capitol building on Thursday afternoon, the Capitol Police have confirmed. The police issued a shelter in place order for Capitol Hill, which has since been lifted. There are reports of related injuries, and that  that the suspect is female, and died on the scene. A news conference is expected to begin at any minute. 

When shots rang out just after 2 p.m., people outside of the Supreme Court building were rushed inside, while some walking outside of the Capitol building, including Sen. Bob Casey, were told to crouch behind a car for about two minutes. They were then ushered inside the building. On MSNBC, Luke Russert said that he heard "three distinct booms" outside of a Capitol window. One witness told CNN that the the shots seemed to originate from behind the Supreme Court building on Constitution Ave. According to multiple reports, including that of NBC's Pete Williams, the suspect was reportedly driving a black car, which she tried to ram through a White House gate about a dozen blocks from Capitol Hill. Then, the suspect headed to Capitol Hill, pursued by secret service, where she began shooting, and was then shot herself.

There are unconfirmed reports, apparently from at least two eyewitnesses, indicating that a child was removed from the suspects car after the exchange of gunfire. The car is a black sedan. 

The map below shows where all those locations are:  

The president has been briefed on the incident, according to the pool reports. The Capitol Police responding to the incident were not furloughed by the government shutdown (they're essential employees). But they are not currently being paid, along with the rest of non-furloughed government staff. 

Until an expected press conference gets underway, there's little out there confirmed by officials, however Capitol Hill is brimming with reporters, staff, and members of Congress who have tweeted what they saw: 

Literally was dragged in by cop as he heard shots fired come over the radio. Now this: pic.twitter.com/K1AJwIEV6G

— KateNocera (@KateNocera) October 3, 2013

Helicopter outside the Capitol pic.twitter.com/B0zDujqWHQ

— Lucia Graves (@lucia_graves) October 3, 2013

we are on lockdown in the speakers lobby and house floor. Gunshots maybe six outside says congressman bill posey who heard them.

— Suzy Khimm (@SuzyKhimm) October 3, 2013

Cops were chasing a black car near the Capitol building. They cornered the car and that's when shots rang out.

— Chris Moody (@Chris_Moody) October 3, 2013

Victim now on stretcher being moved to ambulance. Appears to be civilian in white shoes, jeans (?). pic.twitter.com/2WwEgHPwOV

— Eric Teetsel (@EricTeetsel) October 3, 2013

Rep. Gerry Connolly says it sounded like fireworks, coming from direction of Rayburn Office Building

— Mike Memoli (@mikememoli) October 3, 2013

Here is a picture of the black car that was chased near the capitol building. pic.twitter.com/F0A6PWyI7i Taken by @JordanSekulow

— Chris Moody (@Chris_Moody) October 3, 2013

At least one police car was apparently wrecked in relation to the incident: 

We'll update with more as it comes in.