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A U.S. government official tells CNN that the wars in Afghanistan and Iraq have been cited by the suspect in the Boston Marathon terrorist attacks as motivating factors in his and his brother's reasons for carrying out the attacks.
Investigators interviewed Dzhokhar Tzarnaev in his hospital bed, and though he is debilitated and only able to communicate in a limited fashion, he has provided them with information as to why he and his brother Tamerlan carried out the attacks.
The ranking Republican on the Senate Judiciary committee, Sen. Charles Grassley of Iowa, sent letters Monday night to Department of Homeland Security Sec. Janet Napolitano, and FBI Dir. Robert Mueller about the Boston terrorist attacks and the subsequent investigation.
Among the questions Grassley asks are:
"What was the basis for granting the Tsarnaev brothers Legal Permanent Resident status?
"When did DHS officials first have questions about Tarmerlan (sic) Tsarnaev?
"Was DHS aware at any time in 2011 that the FBI was investigating Tsarnaev?
"Was Tsarnaev's name misspelled on any of his paperwork to travel either when departing or entering the United States?"
Some of Grassley's questions are based on reports in conservative media such as Townhall.com and The Blaze that the DHS and other officials state are just false - these are the ones that seem to conflate two different Saudi nationals, according to government officials.
Details are still emerging over the deadly shootout that left Boston bombing suspect Tamerlan Tsarnaev, 26, dead early Friday night. One mystery that remains is whether Dzhokhar Tsarnaev, 19, accidentally killed his older brother by running over him in his haste to escape.
"He ran over his brother, and he was alive before he got run over, was run over," said Watertown Police Captain Raymond Dupuis.