Silhouetted against the night sky the shell of the burnt-out excavator continued to belch out flames and acrid black smoke over the site where around 100 people lost there lives in an explosion. While adjacent districts of Lagos' northern suburbs were alive with frenetic music, candle-lit night markets and ramshackle minibuses embellished with fairy lights, Isola road in Ijegun was eerily quiet.  Attempts to extinguish the blaze had stopped for the night but the street was full of sand still hot underfoot with patches of red embers or spirals of smoke. The earth-moving Caterpillar excavator brought in for work on the road burst an underground oil pipeline around midday, sparking a massive explosion near a primary school that caused death, injury and destruction on a large scale.