How to remove notification box on LG G2 lock screen ?

[AC Question]

Recently, I found a notification message box on the upper part of my LG G2 lock screen. It displays weather temp and calendar. I don't have this notification box 3 days ago. What makes it come to my lock screen ? It's gone after I sign in but comes back again every time I know the screen twice.
How can I get rid of this box ?
Many thanks.

 

[B. Diddy]

Is it a lockscreen widget? Try long-pressing it and seeing if you can remove it. You may have to enter your screen unlock PIN/password before you get that option.