WASHINGTON — President Donald Trump on Friday delayed his own order to declassify and release documents from the FBI’s Russia investigation, saying the Justice Department and U.S. allies have raised security concerns about their disclosure.

The announcement, in a pair of tweets, represented a highly unusual walk-back for a president who has pressed for the release of classified information that he believes will expose “really bad things” at the FBI and discredit special counsel Robert Mueller’s investigation into possible coordination between Russia and the Trump campaign. The order threatened to fuel further tension between Trump and a law enforcement community.

Trump said that instead of moving forward immediately, the Justice Department’s inspector general had been asked to review these documents on an “expedited basis.”