UN Secretary-General Antonio Guterres has condemned a suicide bombing in Nigeria in which 50 people were killed. In a statement yesterday, Guterres extended his condolences to the bereaved families and to the government and people of Nigeria for the loss of lives, and wished a speedy recovery to the injured, Xinhua news agency reported. <br/><br/>He called for those responsible for these heinous acts to be swiftly brought to justice. A suicide bomber set off explosives yesterday during morning prayers in a mosque in Mubi, a small town in the northeastern state of Adamawa.