Context:
24. Of this condemnation of James the Just, and its causes, as also that he did not die till long afterwards, see Prim.
Christ. Revived, vol. III. ch. 43-46. The sanhedrim condemned
our Savior, but could not put him to death without the approbation of the Roman procurator; nor could therefore Ananias and his sanhedrim do more here, since they never had Albinus's approbation for the putting this James to death.
More:
http://en.wikisource.org/wiki/The_Antiquities_of_the_Jews/Book_XX#Chapter_9