Washington (CNN) -- Upon his surrender, suspected Boston marathon bomber Dzhokhar Tsarnaev was placed in the immediate custody of federal authorities and remains under guard at a Boston hospital. His wounds and limited communication are among the variables that will affect the speed of course of the criminal case. Attorney General Eric Holder announced federal charges on Monday against the Cambridge, Massachusetts, resident. In a criminal complaint unsealed in U.S. District Court for the District of Massachusetts, Tsarnaev, 19, was charged with one count of using and conspiring to use a weapon of mass destruction, namely an improvised explosive device, against persons and property within the United States resulting in death.
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Attorney general will make final call, but expect White House, other top-level input
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Dzhokhar Tsarnaev, 19, was advised of his rights as well as the charges at hospital
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Suspect's lawyers are expected to waive "speedy trial" requirement, sources said
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Tsarnaev's wounds, limited communication among variables that will affect course of case
@placeholder declined to answer bail questions and assented to a probable cause hearing on May 30, 2013, at 10 am.