Creepy!

So I was working late at the school today and after Maghrib I returned to my room. I was at my computer and I have a wall of windows behind me. On this side of the building there is no lighting and there is a small forest and then the basketball hoops to the far corner. Suddenly, as I'm working away, there is a brush against the far window and I ignored it, but shortly after there were a few bangs or knocks and I could not see a thing! I thought that maybe someone was trying to get into the building because people use the gym etc. and I had already let a little boy in earlier through the front. But there was no one out there and it totally freaked me out! I mean if it wasn't for the occasional roar from the gym you could hear a needle drop in the school. I was the only one in there! Shortly after that I left, I couldn't get any work done because every time I heard a sound I would wait to hear from where it had come from etc etc. On my way I stopped at Rahma to pray Isha and holy moly there was a party in there! There was a jumping jamboree that the kids were lined up to use and so much general merriment that I couldn't believe my eyes! It was hard to pray because the machine made so much noise and we couldn't hear the Imam every time he went into sajood but it didn't matter the feeling in the mosque was amazing! Alhumdulillah.