An aerial infrared image shows the outline of Dzhokhar Tsarnaev in a boat during the manhunt in Watertown, Massachusetts, April 19, 2013, courtesy of the Massachusetts State Police. (Photo: AP)
Boston bombing suspect Dzhokhar Tsarnaev remained in serious condition in hospital "unable to communicate," Massachusetts governor Deval Patrick said Saturday.
The 19-year-old is "serious but stable. I think not able to communicate yet," the governor told reporters after attending a tribute to the victims of Monday's bomb attacks that left three dead and about 180 injured.
CBS television quoted investigators as saying that Tsarnaev suffered two serious wounds and had lost a lot of blood. It said investigators had speculated that one wound in the back of his neck could have been a suicide attempt.
"They say it appears from the wound that he might have stuck a gun in his mouth and fired," said the report, which added that Tsarnaev could understand what those around him were saying.
Dzhokhar Tsarnaev was detained on Friday. His elder brother Tamerlan was killed in a shootout with police earlier in the day during a massive manhunt.
Patrick said he hopes the teenaged suspect survives. "We have a million questions and those questions need to be answered," he added.