Members of a congressional committee [on July 10] accused the FBI of stalling an inquiry into the Boston Marathon bombings, saying the bureau had no grounds for withholding what it knew about Tamerlan Tsarnaev prior to the attacks. The information requested by this committee belongs to the American people,'' said Representative Michael McCaul, a Texas Republican who chairs the House Homeland Security Committee. "It does not belong solely to the FBI." The frustrations, aired publicly after FBI officials rebuffed an invitation to appear before the committee, stemmed from the FBI's unwillingness to detail how it handled a security review of Tsarnaev nearly two years before the Marathon bombings. "The FBI continues to refuse this committee's appropriate requests for information and documents crucial to our investigation into what happened in Boston," McCaul declared as he opened a committee hearing. Tsarnaev died after a firefight with police in Watertown within hours of being identified as a suspect. Members were particularly frustrated by a July 3 letter to the committee from the FBI. The letter, reviewed by the Globe, said the bureau would not be responding to all the committee's requests for information. "The fact that the FBI is not sharing information with this committee with jurisdiction over homeland security I think is just totally unacceptable," said Representative Peter King, a New York Republican.