In our series of letters from Africa, Nigerian writer and novelist Adaobi Tricia Nwaubani considers why some earth tremors in Nigeria's capital caused such a stir.
Sometime in the early hours of 6 September, I was tucked in bed at home in Abuja when, suddenly, a slight trembling seemed to sway the building from side to side.
My first thought was that a jihadist bomb had struck.
I still remember the exact moment in August 2011 when a Boko Haram militant drove a vehicle through two security barriers, crashed into the reception area of the UN headquarters in Abuja, then detonated a bomb, which left more than 20 people dead and more than 60 wounded.
I was in a nearby building, the offices of the now defunct Next newspapers, which rattled and quaked while we all flung ourselves to the ground.
But, when I didn't hear the wailing sirens that always followed bombings in Abuja, I relaxed.
Perhaps the trembling was simply…
