If you see a line like a baseline and a box extending above and below, it is Live Type. In that case, you may Type>Create Outlines, if that is what you (really) want.
It could also be Area Type, or grouped with some path; in the latter case, you may Ungroup and delete the path.
Turning on the Transparency Grid might also help you identify what's grouped with the logo. View > Transparency Grid.
Whenever I see that, first thing I check, (with it selected), is whether Object - Clipping Mask - Release is available.