Documents reviewed by Fox News show there are differences between Benghazi emails released through the federal courts to the conservative watchdog group Judicial Watch and emails released to the House oversight committee as part of its investigation into the attacks.

The discrepancies are fueling allegations the administration is holding back documents to Congress.

“The key question is whether Congress now has all the documents,” Rep. Jason Chaffetz, R-Utah, a member of the oversight committee, said. As for differences between the two sets of documents, Chaffetz alleged: “They are playing games. The classification and redactions are different. Why should Judicial Watch get more than Congress after issuing a subpoena?”

The emails published by Judicial Watch last week, which showed additional White House involvement in shaping the public explanation of what happened, helped trigger the announcement Friday by House Speaker John Boehner of a select committee to investigate.

Two of the emails, from Sept. 14, 2012, appear to be part of the deliberations in advance of then-U.N. ambassador Susan Rice’s Sunday show appearances were she linked an anti-Islam video to the Benghazi attacks. The emails released to Judicial Watch include the names of those who participated in the email chain.

The same emails provided to the House committee do not include names.

While the text and subject line are redacted in full for both Judicial Watch and Capitol Hill, there are unexplained differences in the classification. The emails, originally marked “unclassified,” were retroactively classified in February by the Department of State.

The email released to Judicial Watch is now marked “SECRET,” and the same email released to the Oversight Committee is marked “Confidential.” Both are marked to “DECLASSIFY” on Sept. 13, 2037 — 25 years after the terrorist attack which killed four Americans.