Washington (CNN) The Justice Department has declared invalid two of the four surveillance warrants against former Trump campaign associate Carter Page, the Foreign Intelligence Surveillance Court said Thursday.

The acknowledgment to the surveillance court is the latest fallout from December's scathing inspector general report , which faulted the FBI for a series of misstatements and omissions in the applications to get secret court warrants to eavesdrop on Page.

The Justice Department's concession to the court means the department now believes, at a minimum, the surveillance of Page should have ended after the second warrant expired in early 2017.

President Donald Trump and Republican allies have consistently criticized the FBI's Russia investigation, and have cited the agency's missteps with the FISA applications to claim the surveillance on Page was illegal throughout.

The letter released Thursday by the court said the Justice Department, while not invalidating the first two warrants, is working to quarantine information collected under all four warrants targeting Page.

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