(CAMBRIDGE, Mass.) -- FBI agents returned Sunday to the Cambridge, Mass., apartment where deceased Boston Marathon bombing suspect Tamerlan Tsarnaev lived, searching the Norfolk Street home to learn as much as they can about the planning and preparation for the attack, officials said.
Dzhokhar Tsarnaev, 19, allegedly told investigators that his brother was the architect of the bombing plot, and that the siblings made the bombs in the apartment Tsarnaev shared with his wife, Katherine Russell.
Russell's attorney said she was shocked by the bombings, but had no prior knowledge of the attacks being planned.
While ABC News has learned that the female DNA found on one of the bombs did not match Russell's the FBI is looking into what her husband may have said to her in a phone call just days after the bombings.
Tamerlan Tsarnaev, 26, died in a gun battle with police on April 19, three days after the bombing that killed three people and injured more than 260 at the Boston Marathon, sparking an intense manhunt until police apprehended his younger brother.
Ruslan Tsami, the Tsarnaev brothers' uncle, arrived in Massachusetts today to arrange burial rites for Tamerlan, who was a devout Muslim.
Peter Stefan, a funeral home director in Worcester, Mass., told ABC’s Good Morning America that he has already looked for plots in New Jersey, Connecticut and Massachusetts to bury Tsarnaev, but has had no luck.
"Is he a terrorist? Sure he is a terrorist, but I can't control what he did. But the person is dead, and burying a dead body, that's all it is," Stefan said.
Meanwhile, Dzhokhar Tsarnaev is recovering in a prison hospital. He faces the death penalty if convicted in the bombing plot.
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