keywords: martyrs seven morocco spain arrests
text: Seven Still at Large in Plot to Bomb Spanish Court  MADRID (Reuters) - Seven men implicated in a suspected  Islamic radical plot to blow up Spain's High Court remain at  large despite the arrests of 13 more people, police sources  said on Friday.  Among those still sought by police is Abdellah Hawari, believed  to be the second highest ranking member of the "Martyrs for  Morocco," a group that authorities said formed in prison and  took steps to load a truck with half a ton of dynamite.