I was out with some friends last night and returned around 2.30-3.00am. I went into my dorm to get ready to sleep. I heard a loud banging on the wall, I heard it around 6 or 7 times and then it stopped. On the other side of the wall where I heard the banging is my brothers room. I looked in on him but he was fast asleep and snoring so it wasn't him banging. I shrugged it off to me hearing things and went back to my bed to sleep.
I must have only been sleeping for about 3 hours when I was awakened by a nudge to my right side. It freaked me out and made me jump. I didn't want to sleep in my room anymore so I went into the lounge area of the flat and slept on the sofa. My brother woke me up this morning around 9:00 am to show me he had scratches on his back.
Our roommates also said they heard the banging on the walls. Now back to the scratches on my brother's back. He couldn't have done them to himself because they look like it was done with something sharper than his fingers. Another flat mate also reported hearing footsteps from the kitchen to outside my brother's door. We all keep our doors locked while we sleep. My brother and I are the only ones who have a key to his door, so no one could have gotten in.