By Beth Germano, WBZ-TVBy Beth Germano

NEW BEDFORD (CBS) – Three people in New Bedford have been detained by the FBI for questioning in connection with bombing suspect Dzhokhar Tsarnaev. Federal and local agencies swarmed an apartment complex on Carriage Drive and executed a search warrant.

Tsarnaev, a sophomore at nearby UMass Dartmouth College, apparently has friends in the complex, and according to a witness, Tsarnaev may have been with a male taken into custody today. “They said the kid got dropped off by the bomber at 4 p.m. yesterday I heard the FBI say,” said Joe St. Pierre.

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Witnesses say another male and a female were also put in a cruiser and driven away by New Bedford police. “They used a bullhorn and said ‘come out, we’re not going to hurt you,’” said witness Dave Ryhmszewizc. “They seemed scared and didn’t want to come out at first.”

The UMass Dartmouth campus was evacuated Friday morning as the FBI and SWAT teams scoured a dorm room in the Pine Dale residence hall where Tsarnaev lives. Classmates say the suspect actually returned to the campus after Monday’s bombings, just blending in with no hint of what happened.

Student Harry Danso says he saw Tsarnaev on Tuesday afternoon and they exchanged greetings. “I said what’s up. Nothing seemed out of the ordinary, he smiled and everything,” said Danso.

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Students describe him as quiet, an avid soccer fan, and also a frequent marijuana smoker. But they were shocked to see the surveillance pictures circulated Thursday by the FBI. “I didn’t know what to think, he’s our friend, we know him,” said a student who would only give his first name Ahmad. “Just can’t believe he’s capable of it.”

Andrew Glasby, who lives in Waltham, says Tsarnaev agreed on Wednesday to give him a ride home to the Cambridge area this weekend. But when he tried to contact him Thursday he wasn’t able to. “One day it’s like nothing happened. So calm and so cool,” he said.

He says Tsarnaev spent a lot of time in his dorm room alone “doing his own thing.” But the revelation he lived among them, particularly after the bombings, sent shockwaves.

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“Why would you come back here. You’re supposed to be in hiding keeping a low profile, why would you come back,” asked student Emily DeInnocentis.

Beth Germano