More than $1 billion in weapons that were shipped to Ukraine have not been properly tracked by the Pentagon, a report from the Defense Department’s inspector general has found.

The report examined $1.699 billion in weapons sent to Ukraine that are subject to enhanced end-use monitoring (EEUM), which includes Javelin anti-tank missiles, Stinger anti-aircraft missiles, night vision goggles, AIM-9X air-to-air missiles, Advanced Medium-Range Air-to-Air Missiles, and other types of weaponry.

The IG report found that the majority of the EEUM arms, nearly 40,000 weapons in total worth approximately $1.005 billion, have not been accounted for after being sent into Ukraine. Smaller, more portable weapons are subject to EEUM since they’re more likely to be smuggled and sold on the black market.

Robert P. Storch, the Pentagon’s inspector general, said there’s “no record” of inventories being taken. “It doesn’t mean they’re not there, or they’re not being used,” he said, according to the New York Times. “[But] because of their sensitivity, their vulnerability to diversion, or misuse, or the consequences of that, it’s particularly important to have this additional tracking and accountability in place.”

The US policy of pouring weapons into Ukraine has been done with very little oversight, and the shipments examined in the IG report are just a fraction of the over $40 billion in military equipment the US has provided or committed to Ukraine since the Russian invasion last year.

This article was originally featured at Antiwar.com and is republished with permission.