Smart Crawl reports a 301 redirection, but I haven't set it up

I'm getting a few messages in SmartCrawl I don't understand (I see them under the SC tab on Hub):

“This page is being redirected to another URL permanently via multiple 301 hops.

While redirecting older content on your site to a new and up-to-date page can be beneficial for SEO, every hop in a redirection chain can cost you SEO juice.

To resolve this, update the redirection for your page so it uses just one hop.
http://www****nts.com/*****menu/ This page is being redirected to another URL permanently via multiple 301 hops.”

But I didn’t add any redirection on the site, as far as I'm aware.