A security official at a Nigeria college on Thursday dismissed reports that a massacre at a nearby student housing area that left at least 40 people dead was linked to tensions over a campus vote."I have no evidence to link it to the election,” Shuaib Aroke, deputy registrar at Federal Polytechnic Mubi, where some of those killed in the Tuesday massacre were enrolled, told AFP."It is a fallacy,” he said of the supposed link being suggested by some Nigerian authorities. "We are united here at polytechnic,” added Aroke, who said he is currently in charge of security on campus.He however said he had no information on who was behind the killings.AFP