Mysterious Fire

One night (well early morning around 2:30 a.m. I think) I woke up. I went to the kitchen to get some water. I looked out the window to see the roof of the wooden shed by my neighbour's house on fire (the house was opposite to my house). I was shocked to see it ablaze and no one was outside trying to put it out or anything. The night was still except for the flames... At that same moment I had to use the washroom so I ran to it hoping to return quickly to the window to see what was happening with the fire. I returned in less than a minute. There was NO FIRE. There was nobody outside to have possibly extinguished it. There was no smoke even...The shed looked untouched but I couldn't be sure about the damage cuz this was in the night so the place was dark...I really didn't know what to think..so I went back to bed confused as ever...

I told my family the story the next day and they didn't know what to think either. FREAKY!