(CNN) — Despite being seriously wounded and heavily sedated, the surviving suspect in the Boston Marathon bombings is answering brief questions from authorities by nodding his head, a source with first-hand knowledge of the investigation told CNN Monday.
Authorities are asking Dzhokhar Tsarnaev whether there are more bombs, explosives caches or weapons, and whether anyone was helping him and his brother, Tamerlan Tsarnaev, the source said.
Investigators are going into Tsarnaev’s room at Beth Israel Deaconess Medical Center in Boston every few hours to ask questions in the presence of doctors, the source said.
It wasn’t immediately clear what information he may be communicating to investigators.
Tsarnaev, who is on a ventilator and restrained, has been hospitalized since authorities took him into custody Friday night after finding him hiding in a boat in the back yard of a Watertown, Massachusetts, home.
While Tsarnaev, 19, has not yet been…
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