UPDATE: Boston Marathon Bombers: One Suspect Dead, One At Large, Boston Locked Down [VIDEO]

At the moment, the standoff in Watertown continues. Law enforcement will be holding a press briefing shortly, at which point we’ll know more about exactly what is happening there, where a large area of the town has been blocked off. Heavily armored personnel, including FBI and military, have converged on a small section of the town and are keeping civilians and media at a distance. The Washington Post has put together an infographic describing the events and locations of the past few days here

The suspects’ uncle, Ruslan Tsarni, just spoke with reporters outside his home in Montgomery Village, Maryland, and did not have kind words for his nephews. “He put a shame on this family,” he said. “He put a shame on the entire Chechen ethnicity.”

When asked what advice he would offer to the remaining at-large suspect, Dzhokhar Tsarnaev, Tsarni said, “I say, Dzhokhar, if you’re alive, turn yourself in. And ask for forgiveness from the victims, from the injured, from those who left. Ask forgiveness from these people.”

Tsarni (right) explained that he hadn’t seen them in years, that they had immigrated to America from Kyrgyzstan in 2003 and received asylum.

10:50am (EST) Police have now surrounded an intersection in Watertown. They have drawn their guns. It is not clear if they are confronting the suspect, though. Media is being kept at a safe distance for now.

The car mentioned in the tweet below has been found unoccupied and is being processed for evidence.

10:25 a.m. (EST): The Boston Police Department says that the fugitive may be in a gray 1999 Honda CRV with the Massachusetts license plate 316-ES9.

Here’s a rundown of what we know right now about the hunt for the two suspects accused of setting off the explosions at Monday’s Boston Marathon:
•One suspect is dead; the other is currently at large, believed to still be in the Boston area, probably in the suburb of Watertown, Massachusetts.
•Watertown is completely shut down, as is Boston in general.
•No trains (either the T or Amtrak), buses or taxis are in service. Streets are closed off.
•Law enforcement is going door-to-door in search of the remaining suspect, whom they believe is armed and dangerous.
•Police have asked all residents to stay in their homes, lock the doors, and only open them for police who present ID.

The two suspects are brothers. One, 26-year-old Tamerlan Tsarnaev, was shot and wounded during a battle with police in Cambridge late Thursday night. He was taken to the hospital and pronounced dead at 1:35 a.m. (EST).

Currently more than 9,000 law enforcement officers of various levels—local police, FBI, counterterrorism agents, Homeland Security—are searching house by house for the remaining suspect, 19-year-old Dzhokhar Tsarnaev of Cambridge.

On Wednesday night, the brothers were on the campus of MIT, where they shot and killed a campus security officer named Sean Collier, 26, of Somerville. Then, at about 10:30 p.m., they carjacked a Mercedes SUV, taking the driver hostage. They later released him, unharmed, and drove to Watertown, where police engaged them.

It was during this fight that the older brother was shot and mortally wounded. The younger brother then escaped somewhere in Watertown, which is where the manhunt is currently focused.

The suspects’ uncle, Ruslan Tsarni, spoke with reporters. He said the boys came to America about 10 years ago. The A.P. had reported earlier that they brothers were from Chechnya.

They both went to high school in Cambridge, where by all accounts so far, they were normal teenagers. Tamerlan, the older brother, was a fairly successful boxer. Dzhokhar was a wrestler, and he had even earned a scholarship from the city of Cambridge.

Dzhokhar attended the University of Massachusetts-Dartmouth, which has closed its campus.

If you have any information, call 1-800-CALL-FBI.
[CBS, Boston Globe, TPM, CBS-Boston, WBSM]