<sod >A Libyan armed group will not extradite the brother of the Manchester suicide bomber who killed 22 people in an attack on a pop concert in Manchester in May to Britain, its spokesman said on Thursday.< eod>< sod > A Libyan armed group holding the brother of a suicide bomber who killed 22 people at a pop concert in the English city of Manchester will not grant a British extradition request, its spokesman said on Thursday.< eod>