I don't vouch for the credibility of this site so if anyone thinks not worth considering please post. On first glance seems better documented than the usual story.
Intelligence Officials Say U.S. Has Retrieved Craft of Non-Human Origin - The Debrief
In a Debrief exclusive, Ralph Blumenthal and Leslie Kean report that a former official says the U.S. has retrieved craft of non-human origin.
Also I think we have a category for this so will move when I find it.