Justus' Chronicle identified Agrippa as the mesiah

Sed et civitas et sanctum corruptum est cum superveniente postes duces populo illi, sive Herode sive Agrippa (hunc enim dicit esse historia Iudaeorum). (Origen Commentary on Matthew ser 40 (81. 9 - 11) on Matthew 24:15 - 19 in Vanderkam and Adler's The Jewish Apocalyptic Heritage in Early Christianity p. 235

Adler notes that "it is regrettable that Origen fails to specify here the author of the Jewish history" but adds further that Origen repeatedly draws from this source. In another place Origen says "Refurtur ... ab his qui Iudaicam historam conscripserunt" (ser. 41 (82. 13 - 15). THE SOURCE HAS TO BE JUSTUS BASED ON PARALLEL CITATIONS FROM OTHER EARLY CHURCH WITNESS FROM ALEXANDRIA (CF JULIUS AFRICANUS AND OTHERS).