Question about neighbor w/ schizophrenia

This is sort of a silly question. My mother claims her neighbor with schizophrenia has been putting bugs under her door to scare her. I'm not sure if my mom may just be paranoid. The problem being, when the women is out of town there are no more bugs. My mother thinks that because she told her neighbor she was afraid of bugs that she ( the neighbor ) is putting bugs under her door. I don't know what to think about this situation. It seems harmless but, my mom is beside herself. That's why I am asking about it. I'm not sue if this could be a behavior problem associated with schizophrenia with bi-polar? Anyone have any advice about this and is it possible or common to have behavioral issuses ?

Thanks

Do you mean bugs as in little beetles? or Bugs as in listening devices?

Sorry it took so long to get back to you. I meant bugs as in beetles.

What do you think?

H

P.S Susan, the neighbor ended up commiting suicide. I really believe she thought she was going to be rescued and went to far. It's a long story, but I am sure you've heard it before. She was only 55 yrs old , we had a hard time dealing with this loss because you always wonder " What could I have done differently " Very sad.

Thanks H