He was heavily sedated and on a ventilator at Beth Israel Deaconess Hospital, but was "alert, mentally competent and lucid" during the brief initial court appearance at his bedside on Monday, U.S. Magistrate Judge Marianne Bowler found.

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Dr. Stephen Epstein, attending physician in the emergency department at Beth Israel Deaconess Medical Center in Boston, said the hospital had received at least 21 patients from the explosions Monday, ranging from people complaining of ear damage to seven needing surgery for life-threatening injuries.

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In a court hearing on Monday before a federal magistrate judge at Beth Israel Deaconess Medical Center, Dzhokhar Tsarnaev was charged at his hospital bedside with crimes that could result in the death penalty if convicted.

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