US intelligence indicates that China is preparing to deliver new air defense systems to Iran within the next few weeks, according to three individuals familiar with recent intelligence assessments, The Caspian Post reports, citing CNN.

It would be a provocative move considering Beijing said it helped broker the fragile ceasefire agreement that paused the war between Iran and the US earlier this week. President Donald Trump is also set to visit China early next month for talks with Chinese President Xi Jinping.

The intelligence also underscores how Iran may be using the ceasefire as an opportunity to replenish certain weapons systems with the help of key foreign partners.

Two of the sources told CNN there are indications that Beijing is working to route the shipments through third countries to mask their true origin.

The systems Beijing is preparing to transfer are shoulder-fired anti-air missile systems known as MANPADs, the sources said, which posed an asymmetric threat to low-flying US military aircraft throughout the course of the five-week war and could again if the ceasefire falls apart.

A spokesperson for the Chinese embassy in Washington said, “China has never provided weapons to any party to the conflict; the information in question is untrue.”

“As a responsible major country, China consistently fulfills its international obligations. We urge the U.S. side to refrain from making baseless allegations, maliciously drawing connections, and engaging in sensationalism; we hope that relevant parties will do more to help de-escalate tensions.”

Earlier this week, an embassy spokesperson told CNN that since the US-Israel-Iran war began Beijing had “been working to help bring about a ceasefire and end to the conflict.”