Dzhokhar Tsarnaev is "NOT" a RIGHT WING NOT! He's one on BARACK OBAMA's MUSLIM BROTHERS! HELL, we need to give those "AZZOLES" another 1.5 BILLION USD's ASAP!

WATERTOWN - Police believe that Boston Marathon terror bombing suspect Dzhokhar Tsarnaev has been pinned down in a boat in the backyard of a Watertown home - and he is still alive, a source tells the Globe.

Police have seen the suspect sit up and are using “flash bang” stun grenades to disorient and distract him. Officers are acting with caution because they remain concerned that the suspect might be wearing a suicide bomb vest, the source said.

The source said police had seen the suspect moving from a State Police helicopter.

The new developments happened just moments after authorities announced that the suspect had eluded a dragnet, abandoning a car and escaping on foot.

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Residents in the area described pandemonium outside their doors.

Lisa Bontempi said in a telephone interview,“There’s a lot of shooting.... I’m really scared. I’ve got to go.”

“We’re seeing every officer rushing to the corner. We’ve heard gunshots. We’ve got cops in bulletproof vests and an ambulance is there, with someone carrying out a stretcher,’’ said Louise Harrison Lepera, another Franklin Street resident.

“There’s a lot of cops outside,” said another resident, who declined to give her name.“Oh, my God, they’re just crouched down by the cars. But I heard a couple of pops, I’m not sure what they were exactly.”

Daniel Cantor, a resident of 84 Franklin Street, said he heard “a number of gunshots” in rapid succession just after 7:10 p.m.

He estimated it to be more than 30 gunshots but less than 50 to the west of his home, which is at 84 Franklin St., toward Washburn Street.“It was the kind that I did not want to be near,” Cantor said.

Cantor said he, his wife, and two kids were hiding under a bed when a reporter called just after 7:15 p.m.

Heavily armed police had been searching a 20-block area of Watertown since about 11 p.m. Thursday night.

Scott Helman, Marcella Bombardieri,­Brian MacQuarrie, Martine Powers, and Maria Sacchetti of the Globe staff and Globe correspondents Jeremy C. Fox, Haven Orecchio-Egresitz, Jaclyn Reiss, and Gal Tziperman Lotan contributed to this report.