NEW : Official : An unidentified woman appears to be among the attackers . Comment: Uhuru Kenyatta promises `` full accountability '' for perpetrators and their backers . He did not explain the cause of the collapse , but fires and explosions had been noted at the upscale venue throughout parts of the last two days . ' Six security officers , at least five terrorists and at least 61 civilians dead , he says .
NEW : Official : An unidentified woman appears to be among the attackers . Comment: Uhuru Kenyatta promises `` full accountability '' for perpetrators and their backers . Six security officers , at least five terrorists and at least 61 civilians dead , he says .