Just minutes after a press conference announcing that suspect Dzhokhar Tsarnaev’s whereabouts were unknown, a barrage of gunfire is being followed by reports that the suspect is pinned down in Watertown, Mass.

A woman reportedly told police that a shed in her yard was found open, and a firefight erupted after police responded to investigate.

Fox News is reporting that a robot is being brought in to search the area. Residents are being told to shelter in place.

Alive, surrounded, and still moving? That’s the report as of 7:30 p.m. Eastern.

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Update: There are reports that the scene has turned into a “negotiation situation” as the suspect is still in the boat and refusing to come out.

http://twitter.com/kesgardner/statuses/325393900753801217

More explosions are being reported.

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Update: The standoff continues as of 8:30 p.m., with police reportedly telling the suspect to give himself up.

It’s official:

Update:

Alive and in custody! Applause breaks out; Boston bombing suspect Dzhokhar Tsarnaev is taken into custody; Update: ‘The terror is over; Justice has won’; Update: ‘We got him,’ pics