What element should have the focus after a search?

A website has its own search (there are reasons for this; no, a Google site search will not do).

So, after a search is executed, for accessibility what element should have the focus? The number of search results? The link to the first result? Something else?

I'm not finding explicit guidance on this.

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Update based on feedback and questions:

I apologize for not being able to link to the site, or a reasonable mockup or wireframe of it. I am not allowed to.
It is a public site (with some small private sections). It is essentially a huge archive of documents and other media, with a lot of odd metadata, and various retrieval methods that don't make it a good fit for using Google.

It is government-related, and pressure for accessibility comes from that direction (in addition to the obvious goodness of accessibility in general).

A user might arrive at the page via a pre-defined search (with search terms in the querystring), or they might do the search themselves from scratch. The search form, simple at first glance but with the ability to add search fields and search many aspects of content and metadata, always remains at the top. They might well modify the search after seeing the results.

From what I can tell, they have a team testing this site having an actual blind user, and also one or more people rather ... er, mechanically applying guidelines. I am not told which items of feedback came from which tester, though I might guess.