This looks like Political Bokoharam attack, probably a strategic way to destroy yoruba-hausa synergy ahead of 2015.

It is an open secret that prominent Yorubas and Hausas are the main groups spear-heading the new mega opposition party. Should this bombing continues and infuriate the Yorubas into attacking the Hausa communities in SW, that strategic alliance may be affected. BH has never attacked anywhere beyond the North, so we need to ask ourselves if what started today is just sporadic or have something to do with the newly formed APC.