IMU vanished !

One day, when I looked out to the window, to my horror IMU was missing. IMU is located just in front of my Vista C condominium's window, about 100 meters distance. What had happened ? David Copperfield magic ?

Building on the left is Vista Komanwel B, directly in front is Vista C clubhouse.

At first I thought there was fire in IMU, luckily it wasn't. Anyway if there was fire it doesn't matter to me because I won't be attending classes until March :P

The usual view from my window

I don't know where the smoke comes from, it last for about 15 minutes, it was quite worrying at first because I had never seen haze as serious as this before.