Investigations carried out by Israel revealed that Hamas has been using Chinese-made assault rifles and grenade launchers in its ongoing fight with the Jewish state, according to the Telegraph.

The report noted that the IDF had discovered stockpiles of supplies that included cartridges for M16s and telescopic sights for rifles. There were also military radios and listening devices discovered during the investigation.

The development raises questions about the nature of China’s involvement in the conflict in the Middle East. China has previously expressed interest in deescalating the conflict between Israel and Hamas, and eventually renewing the Iran nuclear deal.

Now, Israel is trying to figure out how Chinese-made weapons made it into Hamas’ hands, and whether Beijing was directly involved in supplying the terrorist group the military material.