FBI agents were still unable to interview Boston Marathon bombing suspect, 19-year-old Dzhokar Tsarnaev, Sunday due to severe neck and tongue injuries he sustained during his run from police.

Federal prosecutor for the Boston area, Attorney Carmen Ortiz, said an official announcement as to the charges for the suspect should be expected Sunday.

Dzhokar Tsarnaev was caught by police Friday during a massive manhunt following the Boston Marathon bombing. (Creative Commons)

According to the New York Daily News, the suspect suffered injuries to his throat and tongue in a suspected suicide attempt gone bad though the theory has not been confirmed. 

READ MORE: Everything We Know About The Boston Marathon Bombing Suspects So Far

Tsarnaev, remains in a sedated state at Beth Israel Deaconess Medical Center in serious condition according to Reuters.

According to the Boston Globe, Tsarnaev, 19, was found hiding inside a covered boat in a Watertown, Mass. backyard Friday night. Police hadembarked on a house-to-house manhunt across 20 blocks of the Boston suburb.

READ MORE: Capture Of Second Boston Bombing Suspect Confirmed

Tsarnaev was wounded and bloody when he was discovered under a tarp and was captured alive. 

His brother, Tamerlan Tsarnaev, 26, died in a gunbattle with police earlier that day.

There was no immediate word on when the younger Tsarnaev might be charged and what those charges would be. The Associated Press reported the most serious charge available to federal prosecutors would be the use of a weapon of mass destruction to kill people, which carries a possible death sentence. The state of Massachusetts does not have the dealth penalty.

Read Neon Tommy Coverage of Boston Marathon Bombing here.