Rep. Pete Hoekstra (R-Mich.), the ranking Republican on the House Permanent Select Committee on Intelligence, said Monday that the Obama administration has been withholding “critical information” on the Fort Hood murders allegedly committed by Army Major Nidal Malik Hasan and is demanding that the Central Intelligence Agency, the Federal Bureau of Investigation, the National Security Agency and the Director of National Intelligence preserve documents relating to the incident for use in potential congressional investigation.

“President Obama said people should not jump to conclusions about what happened at Fort Hood, but the administration is in possession of critical information related to the attack that they are refusing to release to Congress or the American people,” Hoekstra said in a statement. “I intend to push for intense review of this and other issues related to the performance of the intelligence community and whether or not information necessary for military, state and local officials to provide for the security of the post was provided to them.”

The Michigan lawmaker sent a letter Saturday to the top administration intelligence officials, saying he saw “serious issues” with their performance related to the Fort Hood murders, and indicating that the intelligence community had refused to comply with his request to review certain information related to the case.

As the ranking member on the House intelligence committee, Hoekstra is one of the so-called Gang of Eight–a group of lawmakers that included the leaders of the House and Senate and the leaders of the House and Senate intelligence committees–who are briefed on intelligence activities deemed too sensitive to share with the full intelligence committees.

“Over the past 24 hours, I have been made aware of information from the intelligence community that suggests the possibility that serious issues exist with respect to the performance of U.S. intelligence agencies in connection with what appears to have been a terrorism-related attack on Fort Hood, Texas by Nidal Malik Hasan,” Hoekstra wrote. “I am disappointed that the administration has not been more transparent with the American people.”

Hoekstra’s letter was addressed to Dennis Blair, the director of national intelligence (DNI); CIA Director Robert Mueller; FBI Director Leon Panetta and Lt. Gen. Keith Alexander, the director of the National Security Agency (NSA).

“Given the potential seriousness of these issues, I am troubled that the intelligence community has not been more immediately forthcoming with the congressional oversight committees and has refused to provide specific information I have requested to review in connection with this matter,” said Hoekstra.

According to a committee source, Hoekstra’s conversations were with Blair, and the congressman was told that the additional information he requested would not be shared at this time.

As a result, Hoekstra requested that the CIA, FBI, NSA and DNI preserve all documents relating to the Fort Hood attack and related matters for potential investigation by Congress.

“I am requesting that you immediately issue a preservation order to all personnel in your agencies with respect to all documents and materials related to the Fort Hood incident and any related investigations or intelligence collection activities, including other potentially related threats,” Hoekstra wrote. “The record must be clear and complete with respect to these matters, which I am beginning to fear will require significant and serious oversight activity by the Committee.”

In a statement released Monday, Hoekstra explained why he sent the letter to the intelligence chiefs.

“I have requested this information be preserved because I believe members of the full committee on a bipartisan basis will want to scrutinize the intelligence relevant to this attack, what the agencies in possession of that intelligence did with it, who was and wasn’t informed and why, and what steps America’s intelligence agencies are taking in light of what they know,” he said. “At some point, it becomes necessary for us as a nation to address the uncomfortable threat of homegrown terrorism and radicalism, and Congress has an obligation to review how federal agencies are handling and disseminating information related to the threat.

“The horrific shootings at Fort Hood are a tragic reminder of the potential deadly consequences of the threat posed by homegrown jihadism and the failure of the government to adequately respond to it,” said Hoekstra.