I work in a public sector organisation and have been called in by my line manager to say that I have posted something offensive on someone's LinkedIn page and of causing offensive comments on twitter. 
I have a LinkedIn account but don't use it much, I do remember following and unfollowing this person a few months ago but no recollection of posting on their page. Is there a way I can check whether I commented without looking at their profile? I know they can see if I have looked at them and I don't want them to make any more allegations about me.