A question on past ouija board use?

I have just moved into a house where somebody used an ouija board in the past. It was still in the house until recently when I removed it. Last night my electric fire alarms started going off randomly, although there was no fire. A clothes rail also fell over a couple of weeks ago in the night. It tipped over onto its front. Im beginning to freak out a little, could the ouija have anything to do with these happenings?