WASHINGTON, May 21 (Xinhua) -- The United States has postponed the release of a report detailing allegations of Iranian support for Iraqi insurgents, the Wall Street Journal reported Wednesday.

    The U.S. military had initially planned to publicize the report several weeks ago but instead turned the dossier over to the Iraqi government, the newspaper quoted unidentified officials as reporting.

    The classified dossier includes photographs of Iranian mortars, rockets and explosives. It also contains written accounts of interrogation sessions with captured Shiite militants who contend that Iraqi fighters were being trained at a facility near Tehran run by the Lebanese militia Hezbollah, the officials said.

    The U.S. military said the report eventually would be made public but refused to say when it would be released.

    "The timing of the brief... on Iranian interference has yet to be nailed down, but we anticipate briefing sometime in the future," Rear Adm. Patrick Driscoll was quoted as saying.

    Driscoll said that there were "lots of reasons" for the delay but declined further comment.

    The delay comes at a sensitive moment in the U.S. relationship with Iran as Washington has been hardening rhetoric, describing Iranian-backed Shiite militias as the biggest threat to Iraq's stability, the newspaper said.