BREAKING: Cops surround Seattle neighborhood; Clemmons cornered? LATEST: 'Bleeding,' says 911 caller MORE: Now SWAT Operation

UPDATE 11:45 a.m. ET: Maurice Clemmons is still at large. I got six hours sleep and woke up to this news on TV.

LATEST NEWS ON SEATTLE MANHUNT HERE

UPDATE 4:55 a.m. ET: More from KIRO at SWAT standoff in Seattle:

Several bangs, followed by sound of breaking glass, then a louder explosion from Leschi standoff scene.

Obviously, the police want to end this before dawn. They've got night-vision equipment; Clemmons doesn't.

UPDATE 4:50 a.m. ET: KIRO reports from scene of SWAT standoff:

After loud bangs, negotiator on loudspeaker: "This is one of the toughest decisions you'll make in your life, but you need to man up."

UPDATE 4:25 a.m. ET: Michelle Malkin:

KIRO TV in Seattle has detail . . . 4:15am Eastern 11/30…hostage negotiator on loudspeaker attempting to communicate with Clemmons . . .

Young folks, pay attention to how hard Malkin works. Best-selling author, Fox News star and yet here she is, awake in the pre-dawn hours, working to provide up-to-date coverage of a breaking news story. And beating me!

Meanwhile, via Seattle police scanner, we learn that a neighbor is heading to the police command post to report the interior layout of the home where Clemmons is reportedly holed up.

UPDATE 4:40 a.m. ET: KIRO reports police are warning people in the neighborhood to expect loud noise from flashbang devices in event SWAT has to assault. As of now, it's a standoff situation.

BTW, my guess is Malkin filed her 4:15 a.m. blog update after getting a call from Fox News telling her they'd want her on "Fox and Friends" this morning to discuss the case.

UPDATE 3:40 a.m. ET: Zack in Seattle:

BREAKING: SPD SWAT has started their tactical operations

Zach reportedly lives near the scene and is listening to a police scanner.

UPDATE 3:20 a.m. ET: The Seattle University student newspaper reports:

The person of interest in the slaying of four Lakewood police officers this morning may now be hiding in a home at East Yesler Way and 32nd Avenue South, about two miles from Seattle University’s campus.
Police responded around 8:45 p.m. [i.e., 11:45 p.m. ET] to the location because a woman told police Maurice Clemmons, the person of interest, was on the property and bleeding, reports The Seattle Times.

Also: Why was this Arkansas convict in Seattle? Apparently because his sister lives there. And there has been a reported "spurt of crime" in the area near the university.

UPDATE 3:32 a.m. ET: Twitter updates from Seattle resident Zach:

SPD issuing an APB for Eddie David, light skin black male 6'3" 170lbs, assassin's accomplice driving white 83 Buick LeSabre . .

Medics are being summoned to the scene of the police standoff . . .

one of those SPD armored assault vehicles just rolled by my place en route to the scene

PREVIOUSLY 2:42 a.m. ET: Just now reported:

Seattle police cordoned off a section of Seattle's Leschi neighborhood late Sunday night, believing they had located the person of interest in the shooting deaths of four Lakewood, Wash. police officers.
Police cruisers surrounded streets in the neighborhood of 32nd Avenue and Yesler Way in the search for Maurice Clemmons. Several law enforcement sources say they believe they have Clemmons pinned down in the neighborhood. . . .

Previously reported here. Michelle Malkin has been all over the story. More at Memeorandum.

UPDATE 2:53 a.m.: Via Seattle's Channel 5 Twitter:

Seattle Police ask people living in blocked-off area to stay inside/keep doors/windows locked

UPDATE 3:10 a.m.: Also via Twitter, Seattle software developer Buzz Bruggeman says police are searching near the home of his friend.