Updated

The U.S. military says it has found caches of newly made Iranian weapons in Iraq, leading senior officials to conclude Tehran is continuing to funnel armaments into Iraq despite its pledges to the contrary, the Wall Street Journal reported Friday.

Officials in Washington and Baghdad said the purported Iranian mortars, rockets and explosives had date stamps indicating they were manufactured in the past two months. The U.S. plans to publicize the weapons caches in coming days. A pair of senior commanders said a presentation was tentatively planned for Monday, the paper reported.

"You can see the manufacturing dates right on the armaments themselves," one senior commander in Baghdad said. "These are very clearly weapons that were made in the last month or so."

Click here to read the full Wall Street Journal report

The allegations, which couldn't be independently verified, mark a further hardening of U.S. rhetoric on Iran, which senior American officials now describe as the greatest long-term threat to Iraq.

Iran has long denied that its government knowingly funneled weapons into Iraq or trained Shiite militants there. It has derided the U.S. claims as propaganda. Several senior U.S. military officials said the weapons caches would undercut the Iranian denials and provide new evidence of continuing Iranian support for Shiite militants across Iraq.