Are you being haunted?

Two weeks ago, i heard a rumour about one of my hostel mates. He believed to have experienced an unusual sensation, a bit over rated paranormal activity in his room.
After a real hard day at school, he retired in his bed. The room was already too cool so he decided to switch off the ceiling fan. Soon he dozed  off  to sleep. In the middle of the night, he was wide awake with the sound of claps on his bed. Confused he rolled on to the other side of the double bed, quite lazy and tired, he did'nt bother much about the sounds and again went off to sleep. 30 minutes later the same activity repeated itself and he was wide awake once again, this time convinced it was a prank.
Angry at his neighbors, he again went off to sleep. Few minutes later he was again wide awake. He clearly remembered he had switched off the ceiling fan when he went to sleep for the first time, but now the fan was whirling around, at its maximum speed. The already cold room was becoming icy cold, the fan was not ready to seize down. All this made him feel blank, dull.
Scared as hell, he rolled down, and prayed the night to pass peacefully, and the next day the rumor began to spread like a wildfire.
Now the question that arises here is, is there really some usual, unstable energy in the room?
Is it that the energy or the active soul wants to show its presence to the person, or is it nothing more than mere dreams, or just stories made up by him to haunt other hostel mates?
Are there really such kind of energies that science disapproves of?
Or are we actually being Haunted???