Nearly 1.5 million N95 respirator masks, a medical product that is crucial in hospitals fight against the coronavirus, haven't been shipped because they are past their expiration date, according to The Washington Post.

The masks are reportedly part of Customs and Border Protection’s emergency stock. In a meeting Wednesday about what to do with the masks, Department of Homeland Security (DHS) officials decided to turn the masks over to the Transportation Security Administration, which has demanded masks of its own, according to the Post's sources.

The sources told the paper that CBP has no plans of giving the masks to hospitals or the Federal Emergency Management Agency (FEMA).

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Manufacturers of the masks have said that the masks stay effective if stored properly and that the largest problem with older masks is that the elastic bands on the mask can weaken, which prevents a proper seal from being created against a user’s face.

But the CDC has released guidelines that outline how to safely use expired N95 masks.