Why am I getting Facebook notifications on my iPhone?

A while back I turned of all Facebook notifications on my iPhone because they were getting annoying. However, I've recently been receiving notifications about status updates and new pictures. The weird thing is, I only receive these notifications from about 3 or 4 people, not everyone. It's been the same people lately and I was wondering why I'm getting these notifications. I have not classified them as "Close Friends" or "Acquaintances".It's like I'm stalking them, but I really don't want to stalk them because that feels creepy. Why am I getting these notifications on my iPhone and how can I stop them? I've already looked at my settings and I'm not sure what to do.

You may be subscribed to them by accident I've had that happen a couple of times so just go to their page on your computer and unsubscribe if thats not it then reinstall the facebook app

John, I add email!